THPDFSignatureAlgorithm Type

Names the public-key signature algorithm a signature provider signs or verifies with

Declaration

THPDFSignatureAlgorithm= (
  hsaUnknown,
  hsaRSAPKCS1v15,
  hsaRSAPSS,
  hsaECDSA,
  hsaEd25519,
  hsaEd448,
  hsaMLDSA44,
  hsaMLDSA65,
  hsaMLDSA87
  );

Unit

HPDFSignatureProvider

Values

Value	Purpose
`hsaUnknown`	No algorithm selected or recognized; display-name mapping returns an empty string
`hsaRSAPKCS1v15`	RSASSA-PKCS1-v1_5 over a caller-supplied digest; reported as `RSA PKCS#1 v1.5`
`hsaRSAPSS`	RSASSA-PSS with explicit parameters over a caller-supplied digest; reported as `RSA-PSS`
`hsaECDSA`	ECDSA over the provider's named curve, signing a caller-supplied digest; reported as `ECDSA`
`hsaEd25519`	Ed25519 PureEdDSA, signing the message itself; reported as `Ed25519`
`hsaEd448`	Ed448 PureEdDSA, signing the message itself; reported as `Ed448`
`hsaMLDSA44`	ML-DSA-44 post-quantum signatures; reported as `ML-DSA-44`
`hsaMLDSA65`	ML-DSA-65 post-quantum signatures; reported as `ML-DSA-65`
`hsaMLDSA87`	ML-DSA-87 post-quantum signatures; reported as `ML-DSA-87`

Usage notes

HPDFSignatureAlgorithmName maps every value to its display name, which is also the algorithm name reported on signature info records
Digest-based algorithms (hsaRSAPKCS1v15, hsaRSAPSS, hsaECDSA) and PureEdDSA algorithms demand different THPDFSignatureInputKind values on the request
Certificate key inspection such as signature size estimation supports the RSA and ECDSA values and reports spsUnsupported for the rest

THPDFSignatureAlgorithm Type

Declaration

Unit

Values

Usage notes

Related APIs