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Implement HSM provider backends for Vault, AWS KMS, and Azure Key Vault #102

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Merged
Steake merged 4 commits into from
Dec 11, 2025
Merged

Implement HSM provider backends for Vault, AWS KMS, and Azure Key Vault #102

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ab685d9
Initial plan
Copilot Dec 9, 2025
454eec9
Implement HSM provider backends (Vault, AWS, Azure)
Copilot Dec 9, 2025
45ba782
Address code review feedback: fix security issues and improve error m…
Copilot Dec 9, 2025
b60e2f3
Improve DER parser bounds checking and validation
Copilot Dec 9, 2025
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18 changes: 18 additions & 0 deletions crates/bitcell-admin/Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,10 @@ default = []
# Enable insecure transaction signing endpoint that accepts private keys via HTTP.
# WARNING: This should NEVER be enabled in production environments.
insecure-tx-signing = []
# HSM provider features
vault = ["vaultrs"]
aws-hsm = ["aws-sdk-kms", "aws-config"]
azure-hsm = ["azure_security_keyvault", "azure_identity", "azure_core"]

[dependencies]
# Web framework
Expand Down Expand Up @@ -44,6 +48,12 @@ sysinfo = "0.30"
# Hex encoding
hex = "0.4"

# Base64 encoding (for Vault backend)
base64 = "0.21"

# Async streams (for Azure backend)
futures = "0.3"

# Error handling
thiserror.workspace = true

Expand All @@ -64,6 +74,14 @@ bitcell-network = { path = "../bitcell-network" }
bitcell-crypto = { path = "../bitcell-crypto" }
bitcell-ca = { path = "../bitcell-ca" }

# HSM providers (optional)
vaultrs = { version = "0.7", optional = true }
aws-sdk-kms = { version = "1.0", optional = true }
aws-config = { version = "1.0", optional = true }
azure_security_keyvault = { version = "0.20", optional = true }
azure_identity = { version = "0.20", optional = true }
azure_core = { version = "0.20", optional = true }

# Unix process management
[target.'cfg(unix)'.dependencies]
libc = "0.2"
Expand Down
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