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POST
/
v1
/
issuers
/
{id}
/
keys
Register Key
curl --request POST \
  --url https://api.truthlocks.com/v1/issuers/{id}/keys \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "kid": "es256-key-1",
  "algorithm": "ES256",
  "public_key": "MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE..."
}
'
{
  "kid": "<string>",
  "issuer_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "public_key": "<string>",
  "not_before": "2023-11-07T05:31:56Z",
  "expires_at": "2023-11-07T05:31:56Z"
}
Registers a new cryptographic signing key for an issuer. Keys start in ACTIVE status and can be used immediately for signing attestations.

​
Supported Algorithms

AlgorithmTypeUse Case
Ed25519EdDSADefault. Fastest signatures, smallest keys. Recommended for most use cases.
ES256ECDSA P-256Widely supported. Compatible with WebCrypto, mobile SDKs.
ES384ECDSA P-384Government/CNSA Suite. Required for some procurement contracts.
ES512ECDSA P-521Maximum ECDSA security. Larger signatures.
RS256RSA PKCS#1v1.5Legacy compatibility. Interop with older PKI systems.
RS384RSA SHA-384Higher security RSA with SHA-384.
RS512RSA SHA-512Higher security RSA with SHA-512.
PS256RSA-PSSModern RSA. NIST recommended replacement for PKCS#1v1.5.
PS384RSA-PSS SHA-384Higher security RSA-PSS.
PS512RSA-PSS SHA-512Maximum RSA security.
Ed25519 is the default and recommended for new projects. Use ES384 for government/regulated industries. Use PS256 over RS256 for new RSA deployments. RS256 is available for backward compatibility only.

​
Parameters

​
issuer_id
string
required
The UUID of the issuer to register the key for
​
kid
string
required
Unique key identifier (e.g., “ed-key-1”)
​
algorithm
string
required
Signing algorithm. One of: Ed25519, ES256, ES384, ES512, RS256, RS384, RS512, PS256, PS384, PS512.
​
public_key
string
required
Base64-encoded public key

​
Responses

Authorizations

​
X-API-Key
string
header
required

API key for machine-to-machine authentication

Path Parameters

​
id
string<uuid>
required

Body

application/json
​
kid
string
required
​
algorithm
enum<string>
required

Signing algorithm for key generation

Available options:
Ed25519,
ES256,
ES384,
ES512,
RS256,
RS384,
RS512,
PS256,
PS384,
PS512
​
public_key
string
required

Base64-encoded public key

​
expires_at
string<date-time>

Response

Key registered

​
kid
string

Key identifier

​
issuer_id
string<uuid>
​
algorithm
enum<string>

Signing algorithm for key generation

Available options:
Ed25519,
ES256,
ES384,
ES512,
RS256,
RS384,
RS512,
PS256,
PS384,
PS512
​
public_key
string

Base64-encoded public key

​
status
enum<string>
Available options:
ACTIVE,
DISABLED,
EXPIRED
​
not_before
string<date-time>
​
expires_at
string<date-time>