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Sealing: Encryption of Secrets #1

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C0ffeeCode merged 7 commits from sealing into dev 2025-04-03 10:08:08 +02:00
Conversation 0 Commits 7 Files changed 24 +1315 -317
24 changed files with 1315 additions and 317 deletions
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5
.gitignore vendored
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@ -7,6 +7,5 @@
*.pdf *.pdf
target/ target/
go_client/openapi.json go_client/openapi.json
crates/storage-sled/sled_db
test.db *.db*
src/storage/database.db

546
Cargo.lock generated
View file

@ -17,6 +17,54 @@ version = "2.0.0"
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[[package]] [[package]]
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@ -99,9 +147,9 @@ checksum = "ace50bade8e6234aa140d9a2f552bbee1db4d353f69b8217bc503490fc1a9f26"
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@ -133,12 +181,12 @@ dependencies = [
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@ -166,6 +214,12 @@ dependencies = [
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@ -187,13 +241,25 @@ dependencies = [
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] ]
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@ -223,6 +289,16 @@ version = "1.0.0"
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@ -283,16 +359,39 @@ version = "0.8.21"
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@ -343,6 +442,20 @@ version = "0.15.7"
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@ -352,6 +465,41 @@ dependencies = [
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@ -419,6 +567,17 @@ version = "2.3.0"
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@ -451,6 +610,12 @@ dependencies = [
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[[package]] [[package]]
name = "futures-channel" name = "futures-channel"
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@ -531,6 +696,16 @@ checksum = "85649ca51fd72272d7821adaf274ad91c288277713d9c18820d8499a7ff69e9a"
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@ -562,6 +737,36 @@ version = "0.31.1"
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@ -743,9 +958,9 @@ dependencies = [
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@ -767,9 +982,9 @@ dependencies = [
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@ -888,25 +1112,12 @@ dependencies = [
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@ -1081,9 +1351,27 @@ dependencies = [
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version = "0.6.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9d1fe60d06143b2430aa532c94cfe9e29783047f06c0d7fd359a9a51b729fa25"
dependencies = [
"cfg-if",
"cpufeatures",
"opaque-debug",
"universal-hash",
]
[[package]] [[package]]
name = "portable-atomic" name = "portable-atomic"
version = "1.11.0" version = "1.11.0"
@ -1195,7 +1495,16 @@ version = "0.2.21"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "85eae3c4ed2f50dcfe72643da4befc30deadb458a9b590d720cde2f2b1e97da9" checksum = "85eae3c4ed2f50dcfe72643da4befc30deadb458a9b590d720cde2f2b1e97da9"
dependencies = [ dependencies = [
"zerocopy", "zerocopy 0.8.24",
]
[[package]]
name = "primeorder"
version = "0.13.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "353e1ca18966c16d9deb1c69278edbc5f194139612772bd9537af60ac231e1e6"
dependencies = [
"elliptic-curve",
] ]
[[package]] [[package]]
@ -1222,6 +1531,12 @@ version = "5.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "74765f6d916ee2faa39bc8e68e4f3ed8949b48cccdac59983d287a7cb71ce9c5" checksum = "74765f6d916ee2faa39bc8e68e4f3ed8949b48cccdac59983d287a7cb71ce9c5"
[[package]]
name = "radium"
version = "0.7.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "dc33ff2d4973d518d823d61aa239014831e521c75da58e3df4840d3f47749d09"
[[package]] [[package]]
name = "rand" name = "rand"
version = "0.8.5" version = "0.8.5"
@ -1290,6 +1605,16 @@ version = "0.8.5"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2b15c43186be67a4fd63bee50d0303afffcef381492ebe2c5d87f324e1b8815c" checksum = "2b15c43186be67a4fd63bee50d0303afffcef381492ebe2c5d87f324e1b8815c"
[[package]]
name = "rfc6979"
version = "0.4.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f8dd2a808d456c4a54e300a23e9f5a67e122c3024119acbfd73e3bf664491cb2"
dependencies = [
"hmac",
"subtle",
]
[[package]] [[package]]
name = "ring" name = "ring"
version = "0.17.14" version = "0.17.14"
@ -1374,9 +1699,9 @@ checksum = "917ce264624a4b4db1c364dcc35bfca9ded014d0a958cd47ad3e960e988ea51c"
[[package]] [[package]]
name = "rustls-webpki" name = "rustls-webpki"
version = "0.103.0" version = "0.103.1"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0aa4eeac2588ffff23e9d7a7e9b3f971c5fb5b7ebc9452745e0c232c64f83b2f" checksum = "fef8b8769aaccf73098557a87cd1816b4f9c7c16811c9c77142aa695c16f2c03"
dependencies = [ dependencies = [
"ring", "ring",
"rustls-pki-types", "rustls-pki-types",
@ -1393,17 +1718,20 @@ checksum = "eded382c5f5f786b989652c49544c4877d9f015cc22e145a5ea8ea66c2921cd2"
name = "rvault-server" name = "rvault-server"
version = "0.1.0" version = "0.1.0"
dependencies = [ dependencies = [
"aes-gcm-siv",
"axum", "axum",
"base64",
"dotenvy", "dotenvy",
"env_logger", "env_logger",
"json-patch",
"log", "log",
"p256",
"serde", "serde",
"serde_json", "serde_json",
"sqlx", "sqlx",
"time", "time",
"tokio", "tokio",
"tower", "tower",
"vsss-rs",
"zeroize", "zeroize",
] ]
@ -1419,6 +1747,20 @@ version = "1.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49" checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
[[package]]
name = "sec1"
version = "0.7.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d3e97a565f76233a6003f9f5c54be1d9c5bdfa3eccfb189469f11ec4901c47dc"
dependencies = [
"base16ct",
"der",
"generic-array 0.14.7",
"pkcs8",
"subtle",
"zeroize",
]
[[package]] [[package]]
name = "serde" name = "serde"
version = "1.0.219" version = "1.0.219"
@ -1473,6 +1815,16 @@ dependencies = [
"serde", "serde",
] ]
[[package]]
name = "serdect"
version = "0.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a84f14a19e9a014bb9f4512488d9829a68e04ecabffb0f9904cd1ace94598177"
dependencies = [
"base16ct",
"serde",
]
[[package]] [[package]]
name = "sha1" name = "sha1"
version = "0.10.6" version = "0.10.6"
@ -1495,6 +1847,16 @@ dependencies = [
"digest", "digest",
] ]
[[package]]
name = "sha3"
version = "0.10.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "75872d278a8f37ef87fa0ddbda7802605cb18344497949862c0d4dcb291eba60"
dependencies = [
"digest",
"keccak",
]
[[package]] [[package]]
name = "shlex" name = "shlex"
version = "1.3.0" version = "1.3.0"
@ -1595,7 +1957,7 @@ dependencies = [
"futures-intrusive", "futures-intrusive",
"futures-io", "futures-io",
"futures-util", "futures-util",
"hashbrown", "hashbrown 0.15.2",
"hashlink", "hashlink",
"indexmap", "indexmap",
"log", "log",
@ -1608,7 +1970,7 @@ dependencies = [
"serde_json", "serde_json",
"sha2", "sha2",
"smallvec", "smallvec",
"thiserror 2.0.12", "thiserror",
"time", "time",
"tokio", "tokio",
"tokio-stream", "tokio-stream",
@ -1675,7 +2037,7 @@ dependencies = [
"futures-core", "futures-core",
"futures-io", "futures-io",
"futures-util", "futures-util",
"generic-array", "generic-array 0.14.7",
"hex", "hex",
"hkdf", "hkdf",
"hmac", "hmac",
@ -1693,7 +2055,7 @@ dependencies = [
"smallvec", "smallvec",
"sqlx-core", "sqlx-core",
"stringprep", "stringprep",
"thiserror 2.0.12", "thiserror",
"time", "time",
"tracing", "tracing",
"whoami", "whoami",
@ -1731,7 +2093,7 @@ dependencies = [
"smallvec", "smallvec",
"sqlx-core", "sqlx-core",
"stringprep", "stringprep",
"thiserror 2.0.12", "thiserror",
"time", "time",
"tracing", "tracing",
"whoami", "whoami",
@ -1767,6 +2129,16 @@ version = "1.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a8f112729512f8e442d81f95a8a7ddf2b7c6b8a1a6f509a95864142b30cab2d3" checksum = "a8f112729512f8e442d81f95a8a7ddf2b7c6b8a1a6f509a95864142b30cab2d3"
[[package]]
name = "std-shims"
version = "0.1.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "90e49360f31b0b75a6a82a5205c6103ea07a79a60808d44f5cc879d303337926"
dependencies = [
"hashbrown 0.14.5",
"spin",
]
[[package]] [[package]]
name = "stringprep" name = "stringprep"
version = "0.1.5" version = "0.1.5"
@ -1812,6 +2184,12 @@ dependencies = [
"syn", "syn",
] ]
[[package]]
name = "tap"
version = "1.0.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "55937e1799185b12863d447f42597ed69d9928686b8d88a1df17376a097d8369"
[[package]] [[package]]
name = "tempfile" name = "tempfile"
version = "3.19.1" version = "3.19.1"
@ -1825,33 +2203,13 @@ dependencies = [
"windows-sys 0.59.0", "windows-sys 0.59.0",
] ]
[[package]]
name = "thiserror"
version = "1.0.69"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b6aaf5339b578ea85b50e080feb250a3e8ae8cfcdff9a461c9ec2904bc923f52"
dependencies = [
"thiserror-impl 1.0.69",
]
[[package]] [[package]]
name = "thiserror" name = "thiserror"
version = "2.0.12" version = "2.0.12"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "567b8a2dae586314f7be2a752ec7474332959c6460e02bde30d702a66d488708" checksum = "567b8a2dae586314f7be2a752ec7474332959c6460e02bde30d702a66d488708"
dependencies = [ dependencies = [
"thiserror-impl 2.0.12", "thiserror-impl",
]
[[package]]
name = "thiserror-impl"
version = "1.0.69"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "4fee6c4efc90059e10f81e6d42c60a18f76588c3d74cb83a0b242a2b6c7504c1"
dependencies = [
"proc-macro2",
"quote",
"syn",
] ]
[[package]] [[package]]
@ -2054,6 +2412,16 @@ version = "0.1.3"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e70f2a8b45122e719eb623c01822704c4e0907e7e426a05927e1a1cfff5b75d0" checksum = "e70f2a8b45122e719eb623c01822704c4e0907e7e426a05927e1a1cfff5b75d0"
[[package]]
name = "universal-hash"
version = "0.5.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fc1de2c688dc15305988b563c3854064043356019f97a4b46276fe734c4f07ea"
dependencies = [
"crypto-common",
"subtle",
]
[[package]] [[package]]
name = "untrusted" name = "untrusted"
version = "0.9.0" version = "0.9.0"
@ -2101,6 +2469,25 @@ version = "0.9.5"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a" checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
[[package]]
name = "vsss-rs"
version = "5.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fec4ebcc5594130c31b49594d55c0583fe80621f252f570b222ca4845cafd3cf"
dependencies = [
"crypto-bigint",
"elliptic-curve",
"elliptic-curve-tools",
"generic-array 1.2.0",
"hex",
"num",
"rand_core",
"serde",
"sha3",
"subtle",
"zeroize",
]
[[package]] [[package]]
name = "wasi" name = "wasi"
version = "0.11.0+wasi-snapshot-preview1" version = "0.11.0+wasi-snapshot-preview1"
@ -2310,6 +2697,15 @@ version = "0.5.5"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1e9df38ee2d2c3c5948ea468a8406ff0db0b29ae1ffde1bcf20ef305bcc95c51" checksum = "1e9df38ee2d2c3c5948ea468a8406ff0db0b29ae1ffde1bcf20ef305bcc95c51"
[[package]]
name = "wyz"
version = "0.5.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "05f360fc0b24296329c78fda852a1e9ae82de9cf7b27dae4b7f62f118f77b9ed"
dependencies = [
"tap",
]
[[package]] [[package]]
name = "yoke" name = "yoke"
version = "0.7.5" version = "0.7.5"
@ -2334,13 +2730,33 @@ dependencies = [
"synstructure", "synstructure",
] ]
[[package]]
name = "zerocopy"
version = "0.7.35"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1b9b4fd18abc82b8136838da5d50bae7bdea537c574d8dc1a34ed098d6c166f0"
dependencies = [
"zerocopy-derive 0.7.35",
]
[[package]] [[package]]
name = "zerocopy" name = "zerocopy"
version = "0.8.24" version = "0.8.24"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2586fea28e186957ef732a5f8b3be2da217d65c5969d4b1e17f973ebbe876879" checksum = "2586fea28e186957ef732a5f8b3be2da217d65c5969d4b1e17f973ebbe876879"
dependencies = [ dependencies = [
"zerocopy-derive", "zerocopy-derive 0.8.24",
]
[[package]]
name = "zerocopy-derive"
version = "0.7.35"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"
dependencies = [
"proc-macro2",
"quote",
"syn",
] ]
[[package]] [[package]]

29
Cargo.toml
View file

@ -3,19 +3,24 @@ name = "rvault-server"
version = "0.1.0" version = "0.1.0"
edition = "2024" edition = "2024"
[features]
default = ["shamir"]
# default = ["insecure-dev-sealing"]
insecure-dev-sealing = []
shamir = ["vsss-rs", "p256"]
[dependencies] [dependencies]
log = "0.4.21" log = "0.4.27"
env_logger = "0.11.3" env_logger = "0.11.7"
zeroize = { version = "1.7.0", features = ["zeroize_derive"] } zeroize = { version = "1.8.1", features = ["zeroize_derive"] }
time = { version = "0.3.39", features = ["serde", "formatting"]} time = { version = "0.3.41", features = ["serde", "formatting"]}
tokio = { version = "1.37.0", features = ["full"] } tokio = { version = "1.44.1", features = ["full"] }
tower = { version = "0.5.2", features = [] } tower = { version = "0.5.2", features = [] }
axum = "0.8.1" axum = "0.8.3"
serde = "1.0.201" serde = "1.0.219"
serde_json = "1.0.117" serde_json = "1.0.140"
json-patch = "4.0.0"
# serde_with = "3.8.1"
dotenvy = "0.15.7" dotenvy = "0.15.7"
base64 = "0.22.1"
# utoipa = { version = "4.2.0", features = ["axum_extras"] } # utoipa = { version = "4.2.0", features = ["axum_extras"] }
sqlx = { version = "0.8.3", features = [ sqlx = { version = "0.8.3", features = [
@ -28,6 +33,10 @@ sqlx = { version = "0.8.3", features = [
"time" "time"
] } ] }
aes-gcm-siv = "0.11.1"
vsss-rs = { version = "5.1.0", optional = true, default-features = false, features = ["zeroize", "std"] }
p256 = { version = "0.13.2", optional = true, default-features = false, features = ["std", "ecdsa"] }
[lints] [lints]
workspace = true workspace = true

28
go_tests/tests/secret_test.go
View file

@ -14,7 +14,7 @@ import (
// vault "github.com/openbao/openbao/api/v2" // vault "github.com/openbao/openbao/api/v2"
) )
var client *vault.Client var Client *vault.Client
var ctx context.Context var ctx context.Context
func TestMain(m *testing.M) { func TestMain(m *testing.M) {
@ -26,32 +26,46 @@ func TestMain(m *testing.M) {
config.Timeout = 30 * time.Second config.Timeout = 30 * time.Second
// prepare a client with the given base address // prepare a client with the given base address
client, err = vault.NewClient(config) Client, err = vault.NewClient(config)
if err != nil { if err != nil {
log.Fatalf("unable to initialize Vault client: %v", err) log.Fatalf("unable to initialize Vault client: %v", err)
} }
log.Println("client prepared") log.Println("client prepared")
// authenticate with a root token (insecure) // authenticate with a root token (insecure)
client.SetToken("my-token") Client.SetToken("my-token")
exitCode := m.Run() // run all tests and get code exitCode := m.Run() // run all tests and get code
os.Exit(exitCode) os.Exit(exitCode)
} }
// Requires in-code portions
// func TestUnseal(t *testing.T) {
// abc := []string{
// "eyJpIjpbMCwwLDAsMCwwLDAsMCwwLDAsMCwwLDAsMCwwLDAsMCwwLDAsMCwwLDAsMCwwLDAsMCwwLDAsMCwwLDAsMCwxXSwidiI6WzE4OCw2NiwxMTksMTQ0LDE1OSw3MCw4NiwxMTUsMTIwLDI1MywxMjQsOTYsMTM5LDk0LDQ1LDE2NiwyMTMsMzYsMTE1LDU4LDg5LDE0OCw2MCwyOCwxNTAsMTE2LDU3LDg5LDIwMCw5NywxNDYsMjEzXX0=",
// "eyJpIjpbMCwwLDAsMCwwLDAsMCwwLDAsMCwwLDAsMCwwLDAsMCwwLDAsMCwwLDAsMCwwLDAsMCwwLDAsMCwwLDAsMCwyXSwidiI6WzE1OCwyNDQsNzEsOTUsMTIyLDEzOCwyNDEsMjEzLDQ1LDE1NiwxMTgsNCwxNzYsNiwxNTcsMTkyLDE2MSwxNjEsNDMsMTc1LDE5NSw4NywxODAsMTAwLDE1NiwxNCwxNDgsMTUsMTc4LDkwLDY3LDExOF19",
// }
// for i := range abc {
// if _, err := Client.Sys().Unseal(abc[i]); err != nil {
// t.Fatal("Error unsealing", err)
// }
// }
// }
func kv2Write(t *testing.T, mount string, path string) { func kv2Write(t *testing.T, mount string, path string) {
data := map[string]any{ data := map[string]any{
"password1": "123abc", "password1": "123abc",
"password2": "horse horse horse battery staple correct", "password2": "horse horse horse battery staple correct",
} }
t.Logf("Attempting to write to KV2 %s path %s:\t", mount, path) t.Logf("Attempting to write to KV2 %s path %s:\t", mount, path)
v, err := client.KVv2(mount).Put(ctx, path, data) v, err := Client.KVv2(mount).Put(ctx, path, data)
if err != nil { if err != nil {
t.Fatal("ERROR writing secret:\n\t", err) t.Fatal("ERROR writing secret:\n\t", err)
} }
t.Log("Success (unchecked)\n\t", v) t.Log("Success (unchecked)\n\t", v)
res, err := client.KVv2(mount).Get(ctx, path) res, err := Client.KVv2(mount).Get(ctx, path)
if err != nil { if err != nil {
t.Fatal("ERROR checking/reading secret (request failed)\n\t", err) t.Fatal("ERROR checking/reading secret (request failed)\n\t", err)
} }
@ -65,11 +79,11 @@ func kv2Write(t *testing.T, mount string, path string) {
} }
func kv2Delete(t *testing.T, mount string, path string) { func kv2Delete(t *testing.T, mount string, path string) {
err := client.KVv2(mount).Delete(ctx, path) // currently disregarding modifier options err := Client.KVv2(mount).Delete(ctx, path) // currently disregarding modifier options
if err != nil { if err != nil {
log.Fatal("ERROR deleting secret:\n\t", err) log.Fatal("ERROR deleting secret:\n\t", err)
} }
res, err := client.KVv2(mount).Get(ctx, path) res, err := Client.KVv2(mount).Get(ctx, path)
if res != nil || err == nil { if res != nil || err == nil {
t.Fatal("ERROR checking/reading secret (request failed)\n\t", res, err) t.Fatal("ERROR checking/reading secret (request failed)\n\t", res, err)
} }

4
migrations/20240501152243_KvSecret.sql
View file

@ -21,10 +21,12 @@ CREATE TABLE kv2_secret_version (
secret_path TEXT NOT NULL, secret_path TEXT NOT NULL,
version_number INTEGER NOT NULL CHECK ( version_number > 0 ), version_number INTEGER NOT NULL CHECK ( version_number > 0 ),
secret_data TEXT NOT NULL,
created_time DATETIME NOT NULL, created_time DATETIME NOT NULL,
deletion_time DATETIME, deletion_time DATETIME,
encrypted_data BLOB NOT NULL,
nonce BLOB NOT NULL CHECK ( length(nonce) = 12 ),
PRIMARY KEY (engine_path, secret_path, version_number), PRIMARY KEY (engine_path, secret_path, version_number),
FOREIGN KEY (engine_path, secret_path) REFERENCES kv2_metadata(engine_path, secret_path) FOREIGN KEY (engine_path, secret_path) REFERENCES kv2_metadata(engine_path, secret_path)
); );

8
migrations/20250326160659_sealing.sql Normal file
View file

@ -0,0 +1,8 @@
-- Sealing Key
CREATE TABLE root_key (
version INTEGER PRIMARY KEY CHECK ( version = 1 ),
encrypted_key BLOB NOT NULL,
nonce BLOB,
type TEXT NOT NULL CHECK ( type IN ('dev_only', 'simple', 'shamir') )
);

4
src/auth.rs
View file

@ -1,13 +1,13 @@
use axum::Router; use axum::Router;
use crate::storage::DatabaseDriver; use crate::storage::DbPool;
// route prefix: `/auth/token/` // route prefix: `/auth/token/`
// mod token; // mod token;
// use self::token::token_auth_router; // use self::token::token_auth_router;
pub fn auth_router(pool: DatabaseDriver) -> Router<DatabaseDriver> { pub fn auth_router(pool: DbPool) -> Router<DbPool> {
Router::new().with_state(pool) Router::new().with_state(pool)
// .nest("/token", token_auth_router()) // .nest("/token", token_auth_router())
} }

11
src/common.rs
View file

@ -21,3 +21,14 @@ impl HttpError {
HttpError::new(status_code, vec![error.to_string(); 1]) HttpError::new(status_code, vec![error.to_string(); 1])
} }
} }
/// Custom serialization function for `secret_data`
pub fn serialize_reject_none<S>(value: &Option<String>, serializer: S) -> Result<S::Ok, S::Error>
where
S: serde::Serializer,
{
match value {
Some(data) => serializer.serialize_str(data),
None => Err(serde::ser::Error::custom("`secret_data` must not be None during serialization!")),
}
}

8
src/engines.rs
View file

@ -10,13 +10,13 @@ use axum::{
use log::*; use log::*;
use tower::Service; use tower::Service;
use crate::{common::HttpError, storage::DatabaseDriver}; use crate::{common::HttpError, storage::DbPool};
#[derive(Clone)] #[derive(Clone)]
/// State to be used to store the database pool /// State to be used to store the database pool
/// and the routers for each engine /// and the routers for each engine
struct EngineMapperState { struct EngineMapperState {
pool: DatabaseDriver, pool: DbPool,
kv_v2: Router, kv_v2: Router,
} }
@ -24,7 +24,7 @@ struct EngineMapperState {
struct EnginePath(String); struct EnginePath(String);
/// Secret engine router /// Secret engine router
pub fn secrets_router(pool: DatabaseDriver) -> Router<DatabaseDriver> { pub fn secrets_router(pool: DbPool) -> Router<DbPool> {
// State containing the pool and engine routers // State containing the pool and engine routers
let state = EngineMapperState { let state = EngineMapperState {
pool: pool.clone(), pool: pool.clone(),
@ -81,7 +81,7 @@ fn unknown_engine(engine_type: String) -> impl IntoResponse {
/// Returns the mount path and engine type for the request, /// Returns the mount path and engine type for the request,
/// if the mount path is registed at the database /// if the mount path is registed at the database
async fn map_mount_points(req: &Uri, pool: &DatabaseDriver) -> Option<(String, String)> { async fn map_mount_points(req: &Uri, pool: &DbPool) -> Option<(String, String)> {
let mut mount_path_fragments: Vec<&str> = req.path().split('/').collect(); let mut mount_path_fragments: Vec<&str> = req.path().split('/').collect();
// Find longest matching existing mount path for the request // Find longest matching existing mount path for the request

5
src/engines/kv.rs
View file

@ -5,14 +5,13 @@ mod meta;
// #[cfg(test)] // #[cfg(test)]
// mod tests; // mod tests;
use crate::storage::DatabaseDriver; use crate::storage::DbPool;
use axum::{ use axum::{
Router, Router,
extract::{Path, State},
routing::*, routing::*,
}; };
pub fn kv_router(pool: DatabaseDriver) -> Router { pub fn kv_router(pool: DbPool) -> Router {
Router::new() Router::new()
.route("/config", get(get_config)) .route("/config", get(get_config))
.route("/config", post(post_config)) .route("/config", post(post_config))

91
src/engines/kv/data.rs
View file

@ -1,11 +1,8 @@
use super::structs::KvV2WriteRequest; use super::structs::KvV2WriteRequest;
use crate::{ use crate::{
DatabaseDriver, common::HttpError, engines::{
common::HttpError, kv::structs::{KvSecretData, KvSecretRes, KvV2WriteResponse, Wrapper}, EnginePath
engines::{ }, storage::sealing::Secret, DbPool
EnginePath,
kv::structs::{KvSecretData, KvSecretRes, KvV2WriteResponse, Wrapper},
},
}; };
use axum::{ use axum::{
Extension, Json, Extension, Json,
@ -13,9 +10,9 @@ use axum::{
http::StatusCode, http::StatusCode,
response::{IntoResponse, NoContent, Response}, response::{IntoResponse, NoContent, Response},
}; };
use log::{error, info, warn}; use log::{debug, error, info, warn};
use serde::Deserialize; use serde::Deserialize;
use time::UtcDateTime; use time::{OffsetDateTime, UtcDateTime};
#[derive(Deserialize)] #[derive(Deserialize)]
pub struct GetDataQuery { pub struct GetDataQuery {
@ -25,25 +22,51 @@ pub struct GetDataQuery {
pub version: u32, pub version: u32,
} }
/// Unluckily needed as `sqlx::query_as!()` does not support FromRow derivations
struct SecretDataInternal {
pub created_time: OffsetDateTime,
pub deletion_time: Option<OffsetDateTime>,
pub version_number: i64,
pub secret_path: String,
pub nonce: Vec<u8>,
pub encrypted_data: Vec<u8>,
}
impl SecretDataInternal {
pub async fn into_external(self) -> KvSecretData {
let secret = Secret::new(self.encrypted_data, self.nonce).decrypt().await;
KvSecretData {
created_time: self.created_time,
deletion_time: self.deletion_time,
version_number: self.version_number,
secret_path: self.secret_path,
secret_data: secret.unwrap(),
}
}
}
pub async fn get_data( pub async fn get_data(
State(pool): State<DatabaseDriver>, State(pool): State<DbPool>,
Query(params): Query<GetDataQuery>, Query(params): Query<GetDataQuery>,
Path(path): Path<String>, Path(path): Path<String>,
Extension(EnginePath(engine_path)): Extension<EnginePath>, Extension(EnginePath(engine_path)): Extension<EnginePath>,
) -> Result<Response, ()> { ) -> Result<Response, ()> {
let res = if params.version == 0 { debug!("Get request: Engine: {engine_path}, path: {path}",);
let res = if params.version != 0 {
// With specific version // With specific version
sqlx::query_as!( sqlx::query_as!(
KvSecretData, SecretDataInternal,
r#"SELECT secret_data, created_time, deletion_time, version_number, secret_path r#"SELECT nonce, encrypted_data, created_time, deletion_time, version_number, secret_path
FROM kv2_secret_version WHERE engine_path = $1 AND secret_path = $2 AND deletion_time IS NULL FROM kv2_secret_version WHERE engine_path = $1 AND secret_path = $2 AND deletion_time IS NULL
AND version_number = $3"#, AND version_number = $3"#,
engine_path, path, params.version).fetch_one(&pool).await engine_path, path, params.version).fetch_one(&pool).await
} else { } else {
// Without specific version // Without specific version
sqlx::query_as!( sqlx::query_as!(
KvSecretData, SecretDataInternal,
r#"SELECT secret_data, created_time, deletion_time, version_number, secret_path r#"SELECT nonce, encrypted_data, created_time, deletion_time, version_number, secret_path
FROM kv2_secret_version WHERE engine_path = $1 AND secret_path = $2 AND deletion_time IS NULL FROM kv2_secret_version WHERE engine_path = $1 AND secret_path = $2 AND deletion_time IS NULL
ORDER BY version_number DESC LIMIT 1"#, ORDER BY version_number DESC LIMIT 1"#,
engine_path, path).fetch_one(&pool).await engine_path, path).fetch_one(&pool).await
@ -51,8 +74,10 @@ pub async fn get_data(
match res { match res {
Ok(secret_content) => { Ok(secret_content) => {
let secret_content = secret_content.into_external().await;
let inner = secret_content.secret_data;
let data = Wrapper { let data = Wrapper {
data: serde_json::from_str(&secret_content.secret_data).unwrap(), data: serde_json::from_str(&inner).unwrap(),
}; };
let return_secret = KvSecretRes { let return_secret = KvSecretRes {
data, data,
@ -60,34 +85,33 @@ pub async fn get_data(
version: Some(secret_content.version_number), version: Some(secret_content.version_number),
}; };
let return_secret = Json(return_secret); let return_secret = Json(return_secret);
info!("{:?}", return_secret); info!("{return_secret:?}");
Ok(return_secret.into_response()) Ok(return_secret.into_response())
} }
Err(e) => match e { Err(e) => match e {
sqlx::Error::RowNotFound => { sqlx::Error::RowNotFound => {
error!("Row not found {:?}", e); warn!("Secret not found (could be correct behavior) {e:?}");
Ok(HttpError::simple( Ok(HttpError::simple(
StatusCode::NOT_FOUND, StatusCode::NOT_FOUND,
"Secret not found within kv2 engine", "Secret not found within kv2 engine",
)) ))
} }
_ => panic!("{e:?}"), _ => panic!("Unhandled error: {e:?}"),
}, },
} }
} }
pub async fn post_data( pub async fn post_data(
State(pool): State<DatabaseDriver>, State(pool): State<DbPool>,
Path(kv_path): Path<String>, Path(kv_path): Path<String>,
Extension(EnginePath(engine_path)): Extension<EnginePath>, Extension(EnginePath(engine_path)): Extension<EnginePath>,
Json(secret): Json<KvV2WriteRequest>, Json(secret): Json<KvV2WriteRequest>,
) -> Result<Response, ()> { ) -> Result<Response, ()> {
log::debug!( debug!(
"Engine: {}, Secret: {}, Content: {}, Version: {:?}, path: {}", "Engine: {}, Secret: {}, Version: {:?}, path: {}",
engine_path, engine_path,
kv_path, kv_path,
secret.data,
secret.version, //.unwrap_or(0), secret.version, //.unwrap_or(0),
kv_path kv_path
); );
@ -95,9 +119,14 @@ pub async fn post_data(
let created_time = time::UtcDateTime::now(); let created_time = time::UtcDateTime::now();
let ts = created_time.unix_timestamp(); let ts = created_time.unix_timestamp();
let content = serde_json::to_string(&secret.data).unwrap();
let Secret { nonce, protected_data } = Secret::encrypt(&content).await.unwrap();
let nonce = nonce.as_slice();
let mut tx = pool.begin().await.unwrap(); let mut tx = pool.begin().await.unwrap();
let res_m = sqlx::query!(" let _ = sqlx::query!("
INSERT INTO kv2_metadata (engine_path, secret_path, cas_required, created_time, max_versions, updated_time) INSERT INTO kv2_metadata (engine_path, secret_path, cas_required, created_time, max_versions, updated_time)
VALUES ($1, $2, 0, $3, 100, $3) VALUES ($1, $2, 0, $3, 100, $3)
ON CONFLICT(engine_path, secret_path) DO NOTHING; ON CONFLICT(engine_path, secret_path) DO NOTHING;
@ -107,7 +136,8 @@ pub async fn post_data(
"src/engines/kv/post_secret.sql", "src/engines/kv/post_secret.sql",
engine_path, engine_path,
kv_path, kv_path,
secret.data, nonce,
protected_data,
ts, ts,
secret.version, secret.version,
) )
@ -117,8 +147,6 @@ pub async fn post_data(
tx.commit().await.expect("FAILED TO WRITE TX!"); tx.commit().await.expect("FAILED TO WRITE TX!");
warn!("test: {res_m:?} {res_r:?} {}", res_r.version_number);
let res = KvV2WriteResponse { let res = KvV2WriteResponse {
created_time: created_time.into(), created_time: created_time.into(),
custom_metadata: None, custom_metadata: None,
@ -134,11 +162,11 @@ pub async fn post_data(
// https://developer.hashicorp.com/vault/api-docs/secret/kv/kv-v2#delete-latest-version-of-secret // https://developer.hashicorp.com/vault/api-docs/secret/kv/kv-v2#delete-latest-version-of-secret
// https://developer.hashicorp.com/vault/api-docs/secret/kv/kv-v2#delete-secret-versions // https://developer.hashicorp.com/vault/api-docs/secret/kv/kv-v2#delete-secret-versions
pub async fn delete_data( pub async fn delete_data(
State(pool): State<DatabaseDriver>, State(pool): State<DbPool>,
Path(path): Path<String>, Path(path): Path<String>,
Extension(EnginePath(engine_path)): Extension<EnginePath>, Extension(EnginePath(engine_path)): Extension<EnginePath>,
) -> Result<Response, Response> { ) -> Result<Response, Response> {
log::debug!("Secret: {}, path: {}", path, path); debug!("Secret: {path}, path: {path}");
let del_time = UtcDateTime::now().unix_timestamp(); let del_time = UtcDateTime::now().unix_timestamp();
@ -186,7 +214,7 @@ pub async fn delete_data(
error!( error!(
"Strange - a version to be deleted has been found but could not be found to set deletion.\n\t{e:?}" "Strange - a version to be deleted has been found but could not be found to set deletion.\n\t{e:?}"
); );
// Not commited transactions will be aborted upon drop // Not committed transactions will be aborted upon drop
// tx.rollback().await.unwrap(); // tx.rollback().await.unwrap();
return Err(HttpError::simple( return Err(HttpError::simple(
StatusCode::INTERNAL_SERVER_ERROR, StatusCode::INTERNAL_SERVER_ERROR,
@ -201,10 +229,8 @@ pub async fn delete_data(
Ok(NoContent.into_response()) Ok(NoContent.into_response())
} }
// Not
pub async fn patch_data( pub async fn patch_data(
State(pool): State<DatabaseDriver>, State(pool): State<DbPool>,
Path(kv_path): Path<String>, Path(kv_path): Path<String>,
Extension(EnginePath(engine_path)): Extension<EnginePath>, Extension(EnginePath(engine_path)): Extension<EnginePath>,
Json(secret): Json<KvV2WriteRequest>, Json(secret): Json<KvV2WriteRequest>,
@ -212,4 +238,3 @@ pub async fn patch_data(
// TODO: implement only application/merge-patch+json // TODO: implement only application/merge-patch+json
todo!("Not implemented") todo!("Not implemented")
} }

4
src/engines/kv/meta.rs
View file

@ -1,4 +1,4 @@
use crate::storage::DatabaseDriver; use crate::storage::DbPool;
use axum::extract::{Path, State}; use axum::extract::{Path, State};
pub async fn delete_path() -> &'static str { pub async fn delete_path() -> &'static str {
@ -14,7 +14,7 @@ pub async fn get_meta() -> &'static str {
} }
pub async fn post_meta( pub async fn post_meta(
State(pool): State<DatabaseDriver>, State(pool): State<DbPool>,
Path((mount_path, kv_path)): Path<(String, String)>, Path((mount_path, kv_path)): Path<(String, String)>,
body: String, body: String,
) -> &'static str { ) -> &'static str {

9
src/engines/kv/post_secret.sql
View file

@ -4,14 +4,15 @@ WITH latest_version AS (
FROM kv2_secret_version FROM kv2_secret_version
WHERE engine_path = $1 AND secret_path = $2 -- engine_path AND secret_path WHERE engine_path = $1 AND secret_path = $2 -- engine_path AND secret_path
) )
INSERT INTO kv2_secret_version (engine_path, secret_path, secret_data, created_time, version_number) INSERT INTO kv2_secret_version (engine_path, secret_path, nonce, encrypted_data, created_time, version_number)
VALUES ( VALUES (
$1, -- engine_path $1, -- engine_path
$2, -- secret_path $2, -- secret_path
$3, -- secret_data $3, -- nonce
$4, -- created_time $4, -- encrypted_data
$5, -- created_time
CASE -- Use provided version if given CASE -- Use provided version if given
WHEN $5 IS NOT NULL THEN $5 -- version_number (optional) WHEN $6 IS NOT NULL THEN $6 -- version_number (optional)
ELSE COALESCE((SELECT max_version FROM latest_version) + 1, 1) -- otherwise 1 ELSE COALESCE((SELECT max_version FROM latest_version) + 1, 1) -- otherwise 1
END -- version_number logic END -- version_number logic
) )

2
src/engines/kv/structs.rs
View file

@ -15,7 +15,6 @@ use time::{OffsetDateTime, UtcDateTime, serde::rfc3339};
// } // }
#[derive(Serialize, Deserialize, Debug, Clone)] #[derive(Serialize, Deserialize, Debug, Clone)]
/// For SQLite support
pub struct KvSecretData { pub struct KvSecretData {
pub secret_data: String, pub secret_data: String,
#[serde(with = "rfc3339")] #[serde(with = "rfc3339")]
@ -43,7 +42,6 @@ pub struct Wrapper<T> {
pub data: T, pub data: T,
} }
#[derive(Serialize, Deserialize, Debug)] #[derive(Serialize, Deserialize, Debug)]
pub struct KvSecretRes { pub struct KvSecretRes {
/// Map (required) /// Map (required)

4
src/identity.rs
View file

@ -1,7 +1,7 @@
use axum::Router; use axum::Router;
use crate::storage::DatabaseDriver; use crate::storage::DbPool;
pub fn identity_router(pool: DatabaseDriver) -> Router<DatabaseDriver> { pub fn identity_router(pool: DbPool) -> Router<DbPool> {
Router::new().with_state(pool) Router::new().with_state(pool)
} }

14
src/main.rs
View file

@ -1,14 +1,16 @@
#![forbid(unsafe_code)]
use axum::{ use axum::{
Router,
extract::Request, extract::Request,
http::StatusCode, http::StatusCode,
middleware::{self, Next}, middleware::{self, Next},
response::{IntoResponse, Response}, response::{IntoResponse, Response},
routing::get, routing::get,
Router,
}; };
use log::*; use log::*;
use std::{env, net::SocketAddr, str::FromStr}; use std::{env, net::SocketAddr, str::FromStr};
use storage::DatabaseDriver; use storage::DbPool;
use tokio::{net::TcpListener, signal}; use tokio::{net::TcpListener, signal};
use crate::common::HttpError; use crate::common::HttpError;
@ -48,7 +50,11 @@ async fn main() {
.layer(middleware::from_fn(set_default_content_type_json)) .layer(middleware::from_fn(set_default_content_type_json))
.with_state(pool.clone()); .with_state(pool.clone());
warn!("Listening on {}", listen_addr.to_string()); if !storage::sealing::prepare_unseal(&pool).await {
storage::sealing::init_default(&pool).await;
}
warn!("Listening on {listen_addr}");
// Start listening // Start listening
let listener = TcpListener::bind(listen_addr).await.unwrap(); let listener = TcpListener::bind(listen_addr).await.unwrap();
axum::serve(listener, app) axum::serve(listener, app)
@ -70,7 +76,7 @@ async fn set_default_content_type_json(
Ok(next.run(req).await) Ok(next.run(req).await)
} }
async fn shutdown_signal(pool: DatabaseDriver) { async fn shutdown_signal(pool: DbPool) {
let ctrl_c = async { let ctrl_c = async {
signal::ctrl_c() signal::ctrl_c()
.await .await

9
src/storage.rs
View file

@ -1,16 +1,19 @@
pub mod sealing;
use std::{fs::File, path::Path}; use std::{fs::File, path::Path};
use log::*; use log::*;
use sqlx::{sqlite::SqlitePoolOptions, Pool, Sqlite}; use sqlx::{sqlite::SqlitePoolOptions, Pool, Sqlite};
pub(crate) type DatabaseDriver = Pool<Sqlite>; pub(crate) type DbType = Sqlite;
pub(crate) type DbPool = Pool<DbType>;
pub async fn create_pool(db_url: String) -> DatabaseDriver { pub async fn create_pool(db_url: String) -> DbPool {
// Create SQLite database file if it does not exist // Create SQLite database file if it does not exist
if db_url.starts_with("sqlite:") && db_url != ("sqlite::memory:") { if db_url.starts_with("sqlite:") && db_url != ("sqlite::memory:") {
let path = db_url.replace("sqlite:", ""); let path = db_url.replace("sqlite:", "");
if !Path::new(&path).exists() { if !Path::new(&path).exists() {
warn!("Sqlite database does not exist, creating file {}", path); warn!("Sqlite database does not exist, creating file {path}");
File::create(&path).expect("Failed to create database file"); File::create(&path).expect("Failed to create database file");
} }
} }

334
src/storage/sealing.rs Normal file
View file

@ -0,0 +1,334 @@
#[cfg(feature = "shamir")]
pub mod shamir;
pub mod simple;
use aes_gcm_siv::{
AeadCore, Aes256GcmSiv, KeyInit,
aead::{Aead, OsRng},
};
use log::{error, info, warn};
use simple::SimpleSealing;
use tokio::sync::RwLock;
use super::DbPool;
#[derive(PartialEq)]
enum KeyEnum {
/// Final key
MainKey(Vec<u8>),
/// Encrypted with single secret (protected_rk, nonce)
Simple(SimpleSealing),
#[cfg(feature = "shamir")]
// Shamir's Secret Sharing
Shamir(shamir::ShamirBucket),
/// Unknown or not initialized
Uninitialized,
}
trait Sealing {
fn new(protected_rk: Vec<u8>, nonce: Vec<u8>) -> Self;
async fn unseal(&mut self, key: String) -> UnsealResult;
}
struct ProtectedRK {
pub protection_type: String,
pub encrypted_key: Vec<u8>,
pub nonce: Option<Vec<u8>>,
}
static ROOT_KEY_MAYBE: RwLock<KeyEnum> = RwLock::const_new(KeyEnum::Uninitialized);
/// Returns `true` if vault is initialized or unsealed.
/// Returns `false` if uninitialized (nothing in the database).
pub async fn prepare_unseal(pool: &DbPool) -> bool {
{
if !matches!(*ROOT_KEY_MAYBE.read().await, KeyEnum::Uninitialized) {
info!("Vault unseal is already prepared");
return true;
}
}
let lock = ROOT_KEY_MAYBE.write(); // Not awaited just here
let rk = sqlx::query_as!(
ProtectedRK,
"SELECT encrypted_key, type as protection_type, nonce FROM root_key ORDER BY version LIMIT 1"
)
.fetch_optional(pool)
.await
.expect("Failed to optionally read root key from the database");
let v = match rk {
Some(v) => v,
None => {
warn!("No root key was found in the database!");
return false;
}
};
info!(
"Root key of type {} found in the database",
v.protection_type
);
let mut lock = lock.await;
let nonce = v.nonce.expect("Simple encryption but the nonce is missing");
let res = match &*v.protection_type {
#[cfg(feature = "insecure-dev-sealing")]
"dev_only" => {
warn!(
"Root key is of type {}. This is INSECURE and must only be used for development purposes!",
v.protection_type
);
KeyEnum::MainKey(v.encrypted_key)
}
#[cfg(not(feature = "insecure-dev-sealing"))]
"dev_only" => panic!(
r#"Database is insecure but "insecure-dev-sealing" is not enabled for this build!"#
),
"simple" => KeyEnum::Simple(SimpleSealing::new(v.encrypted_key, nonce)),
#[cfg(feature = "shamir")]
"shamir" => KeyEnum::Shamir(shamir::ShamirBucket::new(v.encrypted_key, nonce)),
#[cfg(not(feature = "shamir"))]
"shamir" => panic!(r#"Feature "shamir" is not enabled for this build!"#),
_ => panic!("Unknown root key type in database"),
};
*lock = res;
true
}
/// Must NOT be used in production.
/// Token is plainly stored in the database and will be unsealed directly by [prepare_unseal]!
/// Danger!
#[cfg(feature = "insecure-dev-sealing")]
pub async fn init_insecure_in_db(pool: &DbPool) {
let root_key = Aes256GcmSiv::generate_key(&mut OsRng);
let root_key = root_key.as_slice().to_owned();
warn!(
"Danger: INSECURE! Generated root key is stored plainly in the database. Must ONLY be used for development!"
);
write_new_root_key(pool, root_key, "dev_only", Some(b"")).await;
}
async fn write_new_root_key(
pool: &DbPool,
protected_key: Vec<u8>,
type_to_be: &str,
nonce: Option<&[u8]>,
) {
let _ = sqlx::query!(
"
INSERT INTO root_key (encrypted_key, type, version, nonce)
VALUES ($1, $2, 1, $3)
",
protected_key,
type_to_be,
nonce
)
.execute(pool)
.await
.expect("Failed to write new root key to the database");
info!("Initialized new root key!");
}
pub async fn reseal(pool: &DbPool) {
{
let mut lock = ROOT_KEY_MAYBE.write().await;
*lock = KeyEnum::Uninitialized;
}
prepare_unseal(pool).await;
}
// pub async fn sealing_status() {
// let lock = ROOT_KEY_MAYBE.read().await;
// match &*lock {
// KeyEnum::MainKey(_) => todo!(),
// KeyEnum::Simple(_, _) => todo!(),
// KeyEnum::Uninitialized => todo!(),
// KeyEnum::Shamir(_, _) => todo!(),
// }
// }
pub async fn provide_key(key: String) -> UnsealResult {
// First, check if we need to write-lock at all
{
let read_lock = ROOT_KEY_MAYBE.read().await;
if matches!(*read_lock, KeyEnum::MainKey(_)) {
info!("Providing keys is useless since vault is already unlocked");
return UnsealResult::AlreadyDone;
} else if matches!(*read_lock, KeyEnum::Uninitialized) {
error!("Cannot process provided key when the vault is uninitialized");
return UnsealResult::Uninitialized;
}
}
// A write lock is necessary.
let mut write_lock = ROOT_KEY_MAYBE.write().await;
let rk = match &mut *write_lock {
KeyEnum::MainKey(_) | KeyEnum::Uninitialized => {
unreachable!("Should have been checked above")
}
KeyEnum::Simple(simple) => simple.unseal(key).await,
#[cfg(feature = "shamir")]
KeyEnum::Shamir(shamir) => shamir.unseal(key).await,
};
let rk = match rk {
UnsealResult::DoneConfidential(rk) => rk,
UnsealResult::Done => unreachable!(),
reject_action => return reject_action,
};
*write_lock = KeyEnum::MainKey(rk);
info!("Unsealing done; Vault ready");
UnsealResult::Done
}
pub struct Secret {
pub nonce: [u8; 12],
pub protected_data: Vec<u8>,
}
impl Secret {
pub fn new<D, N>(data: D, nonce: N) -> Self
where
D: Into<Vec<u8>>,
N: AsRef<[u8]>,
{
let nonce_slice = nonce.as_ref();
assert!(
nonce_slice.len() == 12,
"Nonce must be exactly 12 bytes long"
);
let nonce: &[u8; 12] = nonce_slice.try_into().expect("Nonce must be 12 bytes long");
Self {
nonce: *nonce,
protected_data: data.into(),
}
}
/// Encrypt a secret
///
/// # Panics
///
/// Panics if .
///
/// # Errors
///
/// This function will return an error if the vault is uninitialized or an unknown error occurs.
pub async fn encrypt(data: &String) -> Result<Self, ()> {
let cipher = if let KeyEnum::MainKey(key) = &*ROOT_KEY_MAYBE.read().await {
match Aes256GcmSiv::new_from_slice(key) {
Ok(v) => v,
Err(e) => {
error!("Failed to create new AesGcmSiv cipher from variable size key: {e}");
return Err(());
}
}
} else {
error!("Cannot encrypt secret since the vault is not unsealed");
return Err(());
};
let nonce: aes_gcm_siv::aead::generic_array::GenericArray<
u8,
<Aes256GcmSiv as aes_gcm_siv::AeadCore>::NonceSize,
> = Aes256GcmSiv::generate_nonce(&mut OsRng); // 96-bits; unique per message
let enc = match cipher.encrypt(&nonce, data.as_bytes()) {
Ok(v) => v,
Err(e) => {
error!("Failed to encrypt secret with cipher: {e}");
return Err(());
}
};
debug_assert!(nonce.len() == 12, "Nonce should be exactly 12 bytes");
let nonce = match nonce.as_slice().try_into() {
Ok(v) => v,
Err(e) => {
error!("Nonce should be exactly 12 bytes: {e}");
return Err(());
}
};
Ok(Self {
nonce,
protected_data: enc,
})
}
pub async fn decrypt_bytes(self) -> Result<Vec<u8>, ()> {
assert!(self.nonce.len() == 12);
let cipher = match &*ROOT_KEY_MAYBE.read().await {
KeyEnum::MainKey(key) => Aes256GcmSiv::new_from_slice(key),
_ => panic!("Cannot seal secret since the vault is not unsealed"),
}
.expect("Failed to create new AesGcmSiv cipher from variable size key");
let nonce = aes_gcm_siv::aead::generic_array::GenericArray::from_slice(&self.nonce);
let enc = match cipher.decrypt(nonce, self.protected_data.as_ref()) {
Ok(v) => v,
Err(e) => {
error!("Failed to decrypt secret with given nonce and cipher: {e}");
return Err(());
}
};
Ok(enc)
}
pub async fn decrypt(self) -> Result<String, ()> {
String::from_utf8(self.decrypt_bytes().await?).map_err(|e| {
error!("Failed to parse secret as UTF8: {e}");
})
}
}
pub enum UnsealResult {
/// Unsealing finished, with root key hidden
Done,
/// Was already unsealed, no action taken
AlreadyDone,
/// Could not unseal as the vault is uninitialized
Uninitialized,
/// Unsealing finished, returns root key
DoneConfidential(Vec<u8>),
/// Unsealing attempt has been recorded but is not sufficient
Unfinished,
/// The provided or the set of previously provided portions are invalid.
/// Unsealing has been reset.
InvalidReset,
/// Duplicate share
Duplicate,
/// Error processing share, invalid
InvalidRejected,
}
pub async fn init_default(pool: &DbPool) {
#[cfg(feature = "insecure-dev-sealing")]
let user_key = {
storage::sealing::init_insecure_in_db(&pool).await;
"INSECURE automatic unlock - TESTING ONLY"
};
#[cfg(not(feature = "insecure-dev-sealing"))]
let user_key = {
#[cfg(not(feature = "shamir"))]
{
simple::init_simple(&pool).await
}
#[cfg(feature = "shamir")]
{
shamir::init_shamir(&pool, 2, 5).await
}
};
let success = prepare_unseal(&pool).await;
warn!("New sealing password generated: {user_key:?}");
assert!(
success,
"Vault ought to have been initialized just now but it is not."
);
}

223
src/storage/sealing/shamir.rs Normal file
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@ -0,0 +1,223 @@
use aes_gcm_siv::{
AeadCore, Aes256GcmSiv, KeyInit,
aead::{Aead, OsRng, generic_array::GenericArray},
};
use base64::{Engine, prelude::BASE64_STANDARD};
use log::{error, info, warn};
use p256::{NonZeroScalar, Scalar, SecretKey};
use serde::{Deserialize, Serialize};
use serde_json::json;
use vsss_rs::{
DefaultShare, Error as VsssErr, IdentifierPrimeField, ReadableShareSet, ShareElement,
ValuePrimeField,
};
use zeroize::ZeroizeOnDrop;
use crate::DbPool;
use super::{write_new_root_key, Sealing, UnsealResult};
type P256Share = DefaultShare<IdentifierPrimeField<Scalar>, IdentifierPrimeField<Scalar>>;
#[derive(PartialEq, Clone, Debug, Serialize, Deserialize, ZeroizeOnDrop)]
/// Differs from [P256Share] by containing Strings
struct ShamirPortion {
#[serde(rename = "i")]
pub identifier: Vec<u8>,
#[serde(rename = "v")]
pub value: Vec<u8>,
}
#[derive(PartialEq)]
pub struct ShamirBucket {
portions: Vec<ShamirPortion>,
protected_rk: Vec<u8>,
nonce: Vec<u8>,
}
impl Sealing for ShamirBucket {
fn new(protected_rk: Vec<u8>, nonce: Vec<u8>) -> Self {
Self {
portions: Vec::with_capacity(2),
protected_rk,
nonce,
}
}
async fn unseal(&mut self, key: String) -> UnsealResult {
let key = match BASE64_STANDARD.decode(key) {
Ok(v) => v,
Err(e) => {
warn!("Portion could not be decoded: {e}");
return UnsealResult::InvalidRejected;
}
};
let key_portion: ShamirPortion = match serde_json::from_slice(&key) {
Ok(v) => v,
Err(e) => {
info!("Portion could not be parsed: {e}");
return UnsealResult::InvalidRejected;
}
};
if self.portions.contains(&key_portion) {
warn!("The supplied Shamir portion is already known. Duplication ignored.");
return UnsealResult::Duplicate;
}
self.portions.push(key_portion);
let abc = match join_keys(&self.portions) {
Ok(v) => v,
Err(e) => {
return match e {
VsssErr::SharingMinThreshold => {
info!("Shamir portion provided. Sharing threshold not reached.");
UnsealResult::Unfinished
},
VsssErr::SharingDuplicateIdentifier => unreachable!("Addition of duplicate keys should have been prevented by not recording them"),
e => {
error!("Unknown error occurred upon joining keys {e:?}");
unreachable!()
},
};
}
}
.to_bytes();
let cipher = match Aes256GcmSiv::new_from_slice(&abc) {
Ok(v) => v,
Err(e) => {
info!("Cipher could not be created from slice: {e}");
return UnsealResult::InvalidRejected;
}
};
debug_assert_eq!(self.nonce.len(), 12);
let nonce = aes_gcm_siv::aead::generic_array::GenericArray::from_slice(&self.nonce);
let root_key = cipher.decrypt(nonce, self.protected_rk.as_ref());
match root_key {
Ok(v) => UnsealResult::DoneConfidential(v),
Err(_) => {
// Err is opaque on purpose
self.portions.clear();
warn!(
"Enough shares have been provided but the set of shares is invalid. The set of shares has been reset."
);
UnsealResult::InvalidReset
}
}
}
}
/// Shamir Secret Sharing does not verify a portion for validity,
/// unlike Feldman Verified Secret Sharing, which is built on Shamir.
/// "Validation" happens by attempting to decrypt the root key.
///
/// # Returns
/// List of encoded key portions
pub async fn init_shamir(pool: &DbPool, threshold: usize, limit: usize) -> Vec<String> {
let root_key = Aes256GcmSiv::generate_key(&mut OsRng);
let nonce: GenericArray<u8, <Aes256GcmSiv as AeadCore>::NonceSize> =
Aes256GcmSiv::generate_nonce(&mut OsRng); // 96-bits; unique per message
let root_key = root_key.as_slice().to_owned();
let (user_key, protected_rk) = {
let key = Aes256GcmSiv::generate_key(&mut OsRng);
let cipher = Aes256GcmSiv::new(&key);
let nonce: &[u8] = nonce.as_slice();
debug_assert_eq!(nonce.len(), 12);
let nonce = aes_gcm_siv::aead::generic_array::GenericArray::from_slice(nonce);
let enc = cipher.encrypt(nonce, root_key.as_slice()).unwrap();
(key, enc)
};
let portions = share_keys(&mut OsRng, threshold, limit, &user_key);
log::debug!("Shared Keys: {portions:?}");
write_new_root_key(pool, protected_rk, "shamir", Some(nonce.as_slice())).await;
portions
}
/// Returns a Vec of Base64 encoded JSON-wrapped identifier-value pairs
fn share_keys(
mut osrng: &mut OsRng,
threshold: usize,
limit: usize,
root_key: &[u8],
) -> Vec<String> {
log::debug!("RK: {root_key:?}");
assert!(
threshold <= limit,
"Threshold cannot be higher than the number of shares (limit)"
);
let rk_array = GenericArray::from_slice(root_key);
let rk_scalar = NonZeroScalar::from_repr(*rk_array).unwrap();
let shared_secret = IdentifierPrimeField(*rk_scalar.as_ref());
let res =
vsss_rs::shamir::split_secret::<P256Share>(threshold, limit, &shared_secret, &mut osrng);
res.unwrap()
.iter()
.map(|f| {
BASE64_STANDARD.encode(
json!(ShamirPortion {
identifier: f.identifier.to_vec(),
value: f.value.to_vec(),
})
.to_string(),
)
})
.collect()
}
fn join_keys(shares: &[ShamirPortion]) -> Result<SecretKey, vsss_rs::Error> {
let shares: Vec<P256Share> = shares
.iter()
.map(|portion| {
let identifier = IdentifierPrimeField::<Scalar>::from_slice(&portion.identifier)
.map_err(|e| {
info!("Portion could not be converted to IdentifierPrimeField: {e}");
VsssErr::InvalidShare
})?;
let value = ValuePrimeField::<Scalar>::from_slice(&portion.value).map_err(|e| {
info!("Portion could not be converted to ValuePrimeField: {e}");
VsssErr::InvalidShare
})?;
Ok(P256Share { identifier, value })
})
.collect::<Result<_, VsssErr>>()?;
let scalar = shares.combine()?;
// A little suboptimal thanks to CtOption
let nzs = match NonZeroScalar::from_repr(scalar.0.into()).into_option() {
Some(v) => v,
None => return Err(VsssErr::InvalidShare),
};
let sk = SecretKey::from(nzs);
Ok(sk)
}
#[test]
fn split_and_join() {
let root_key = Aes256GcmSiv::generate_key(&mut OsRng);
let root_key = root_key.as_slice().to_owned();
let kps = share_keys(&mut OsRng, 2, 5, &root_key);
let kps: Vec<_> = kps
.iter()
.map(|f| {
let b = BASE64_STANDARD
.decode(f)
.expect("A portion could not be decoded from BASE64");
serde_json::from_slice(&b).expect("A portion could not be parsed as a key pair")
})
.collect();
let k = join_keys(&kps).expect("Error on joining key pairs");
assert_eq!(
root_key,
k.to_bytes().as_slice(),
"Original key and re-combined key from shares are not equal"
);
}

47
src/storage/sealing/simple.rs Normal file
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@ -0,0 +1,47 @@
use aes_gcm_siv::{
AeadCore, Aes256GcmSiv, KeyInit,
aead::{Aead, OsRng, generic_array::GenericArray},
};
use base64::{Engine, prelude::BASE64_STANDARD};
use crate::DbPool;
use super::{write_new_root_key, Sealing, UnsealResult};
/// Pair of protected root key and nonce
#[derive(PartialEq)]
pub struct SimpleSealing(Vec<u8>, Vec<u8>);
impl Sealing for SimpleSealing {
fn new(protected_rk: Vec<u8>, nonce: Vec<u8>) -> Self {
Self(protected_rk, nonce)
}
async fn unseal(&mut self, key: String) -> UnsealResult {
let key = BASE64_STANDARD.decode(key).unwrap();
let cipher = Aes256GcmSiv::new_from_slice(&key).unwrap();
debug_assert_eq!(self.1.len(), 12);
let nonce = aes_gcm_siv::aead::generic_array::GenericArray::from_slice(self.1.as_slice());
UnsealResult::DoneConfidential(cipher.decrypt(nonce, self.0.as_ref()).unwrap())
}
}
#[allow(unused)]
pub async fn init_simple(pool: &DbPool) -> String {
let root_key = Aes256GcmSiv::generate_key(&mut OsRng);
let nonce: GenericArray<u8, <Aes256GcmSiv as AeadCore>::NonceSize> =
Aes256GcmSiv::generate_nonce(&mut OsRng); // 96-bits; unique per message
let root_key = root_key.as_slice().to_owned();
let (user_key, protected_rk) = {
let key = Aes256GcmSiv::generate_key(&mut OsRng);
let cipher = Aes256GcmSiv::new(&key);
let nonce: &[u8] = nonce.as_slice();
debug_assert_eq!(nonce.len(), 12);
let nonce = aes_gcm_siv::aead::generic_array::GenericArray::from_slice(nonce);
let enc = cipher.encrypt(nonce, root_key.as_slice()).unwrap();
(key, enc)
};
write_new_root_key(pool, protected_rk, "simple", Some(nonce.as_slice())).await;
BASE64_STANDARD.encode(user_key)
}

167
src/storage/sled.rs
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@ -1,167 +0,0 @@
#[cfg(test)]
mod tests {
use super::*;
use base::create_mock_meta;
#[test]
fn test_update_secret() {
let db: sled::Db = sled::open("sled_db").unwrap();
update_secret(&db, "foo", TempSecret{version: -99, content: "cool".to_string()});
}
#[test]
fn test_get_secret() {
let db: sled::Db = sled::open("sled_db").unwrap();
get_secret(&db, "foo");
}
#[test]
fn test_delete_secret(){
let db: sled::Db = sled::open("sled_db").unwrap();
delete_secret(&db, "foo");
}
#[test]
fn test_meta(){
let db: sled::Db = sled::open("sled_db").unwrap();
println!("writing metadata:");
update_secret_meta(&db, "metatest", create_mock_meta());
println!("getting metadata:");
get_secretmeta(&db, "metatest");
}
}
use sled::Db;
use base::{deserialize_metadata_struct, deserialize_secret_struct, serialize_metadata_json, serialize_secret_json, SecretMeta, TempSecret};
/// [TODO] Currently no proper versioning
/// inserts a secret. If there was already a secret in the given path, the version is incremented
fn update_secret(db: &Db, path: &str, mut secret: TempSecret) {
match get_secret(db, path) {
Some(old_secret) => {
// case secret found. TODO save it somewhere for versioning
secret.version = old_secret.version + 1;
#[cfg(test)]
print!("something was found. new version {} \n", secret.version)
}
None => {
// case new secret
secret.version = 1;
}
}
// if let secret_json = serialize_secret_json(&secret) {
// let _res = db.insert(path, secret_json); // maybe this can be handled cleaner
match serialize_secret_json(&secret) {
Ok(secret_json) => {
#[cfg(test)]
println!("String: {:?}", secret_json.clone());
let as_ivec = sled::IVec::from(secret_json.into_bytes()); // maybe outsource this in a fn later
#[cfg(test)]
println!("ivec: {:?}", as_ivec);
match db.insert(path, as_ivec) {
Ok(_) => println!("Secret inserted"),
Err(e) => eprintln!("Failed to insert secret: {}", e),
}
}
Err(e) => eprintln!("Failed to serialize secret: {}", e),
}
}
// !TODO eliminate redundancy: refactor get and update functions to accept generic types!
// read and return a secret from the DB
//if there is no secret, return None
fn get_secret(db: &Db, path: &str) -> Option<TempSecret>{
let raw_secret;
match db.get(path) {
Ok(Some(ivec)) => {
raw_secret = ivec;
}
Err(e) => {
eprintln!("Error on retrieving secret: {}", e);
return None;
}
Ok(None) => {
return None;
}
}
// outsource this in a fn later. TODO maybe deal with unwrap
let as_str = String::from_utf8(raw_secret.to_vec()).unwrap();
match deserialize_secret_struct(&as_str) {
Ok(secret) => {
#[cfg(test)]
println!("got some secret: {:?}", secret);
return Some(secret);
}
Err(e) => {
eprintln!("error on secret deserialization: {}", e);
return None;
}
}
}
// TODO write abstract get_something fn
// https://developer.hashicorp.com/vault/api-docs/secret/kv/kv-v2#read-secret-metadata
fn get_secretmeta(db: &Db, path: &str) -> Option<SecretMeta>{
let raw_metadata;
match db.get(path) {
Ok(Some(ivec)) => {
raw_metadata = ivec;
}
Err(e) => {
eprintln!("Error on retrieving metadata: {}", e);
return None;
}
Ok(None) => {
return None;
}
}
let as_str = String::from_utf8(raw_metadata.to_vec()).unwrap();
match deserialize_metadata_struct(&as_str) {
Ok(meta) => {
#[cfg(test)]
println!("got some metadata: {:?}", meta);
return Some(meta);
}
Err(e) => {
eprintln!("error on secret deserialization: {}", e);
return None;
}
}
}
// currently early version (copied from update_secret)
fn update_secret_meta(db: &Db, path: &str, mut meta: SecretMeta) {
match get_secretmeta(db, path) {
Some(meta) => {
// case secret found. TODO save it somewhere for versioning
#[cfg(test)]
print!("something was found. new version {:?} \n", meta)
}
None => {
}
}
match serialize_metadata_json(&meta) {
Ok(meta_json) => {
#[cfg(test)]
println!("String: {:?}", meta_json.clone());
let as_ivec = sled::IVec::from(meta_json.into_bytes()); // maybe outsource this in a fn later
#[cfg(test)]
println!("ivec: {:?}", as_ivec);
match db.insert(path, as_ivec) {
Ok(_) => println!("Metadata inserted"),
Err(e) => eprintln!("Failed to insert meta: {}", e),
}
}
Err(e) => eprintln!("Failed to serialize meta: {}", e),
}
}
/// TODO soft delete the secret version at path. can be undone with undelete_secret
// https://developer.hashicorp.com/vault/api-docs/secret/kv/kv-v2#delete-latest-version-of-secret
// https://developer.hashicorp.com/vault/api-docs/secret/kv/kv-v2#delete-secret-versions
/// hard delete secret at path
fn delete_secret(db: &Db, path: &str) {
let rem = db.remove(path);
}

16
src/sys.rs
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@ -1,8 +1,16 @@
use axum::Router; mod root_generation;
mod sealing;
use crate::storage::DatabaseDriver; use axum::Router;
use root_generation::root_generation;
use sealing::sealing_routes;
use crate::storage::DbPool;
/// System routes /// System routes
pub fn sys_router(pool: DatabaseDriver) -> Router<DatabaseDriver> { pub fn sys_router(pool: DbPool) -> Router<DbPool> {
Router::new().with_state(pool) Router::new()
.merge(sealing_routes())
.merge(root_generation())
.with_state(pool)
} }

12
src/sys/root_generation.rs Normal file
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@ -0,0 +1,12 @@
use axum::{Router, routing::post};
use crate::DbPool;
pub fn root_generation() -> Router<DbPool> {
Router::new()
// .route("/generate-root", get(get_root_generation_attempt))
.route("/generate-root", post(generate_new_root))
// .route("/generate-root", delete(cancel_generate_root))
}
async fn generate_new_root() {}

50
src/sys/sealing.rs Normal file
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@ -0,0 +1,50 @@
use axum::{
extract::State, routing::{get, post, put}, Json, Router
};
use log::warn;
use serde::Deserialize;
use crate::storage::{DbPool, sealing};
pub fn sealing_routes() -> Router<DbPool> {
Router::new()
.route("/seal", post(seal_post))
.route("/seal-status", get(seal_status_get))
.route("/unseal", post(unseal_post))
// WTF? Again? Its supposed to be POST but actually a PUT
.route("/unseal", put(unseal_post))
}
async fn seal_post(State(pool): State<DbPool>) {
sealing::reseal(&pool).await;
}
#[derive(Deserialize)]
struct UnsealRequest {
/// Required, unless `reset` is true
pub key: Option<String>,
#[serde(default)]
/// Specifies if previously-provided unseal keys are discarded and the unseal process is reset.
pub reset: bool,
// #[serde(default)]
// /// Used to migrate the seal from shamir to autoseal or autoseal to shamir. Must be provided on all unseal key calls.
// pub migrate: bool,
}
async fn unseal_post(State(pool): State<DbPool>, Json(req): Json<UnsealRequest>) -> Result<(), ()> {
if req.reset {
warn!("Unsealing progress has been reset on unseal request");
sealing::reseal(&pool).await;
}
if let Some(key) = req.key {
sealing::provide_key(key).await;
} else if !req.reset {
// No request key nor reset = bad request
return Err(());
}
Ok(())
}
async fn seal_status_get(State(pool): State<DbPool>) {}