Common Data Security Architecture (CDSA) White Paper

32 Chapter1

Cryptography Service Provider (CSP) API

• Digital Signature and Validation

Algorithm ID:

— CSSM_ALGID_MD5WithRSA

— CSSM_ALGID_SHA1WithRSA

— CSSM_ALGID_SHA1WithDSA

• Parameter Generation

Algorithm ID:

— CSSM_ALGID_DSA

— CSSM_ALGID_DH

• Key Wrapping and Unwrapping

Algorithm ID, shown with keysize speciﬁcation in bits:

— CSSM_ALGID_RSA; 512

— CSSM_ALGID_CDMF; 64

— CSSM_ALGID_RC2; <=40

— CSSM_ALGID_RC4; <=40

• Key Derivation

Algorithm ID, shown with supported derived key type:

— CSSM_ALGID_DH; CDMF, RC2, RC4

— CSSM_ALGID_MD5_PBE; CDMF

— CSSM_ALGID_SHA1_PBE; CDMF

Purpose Pass-Through ID

Provide OAEP message formatting and parsing.

Support SHA1 or MD5 hash functions or

user-speciﬁed mask generation function.

ISC_CSP_OAEP_ENCODE

ISC_CSP_OAEP_DECODE

BER-encode CSSM RSA and DSA keys ISC_CSP_ENCODE_DSA_PUBKEY

ISC_CSP_ENCODE_DSA_PRIKEY

ISC_CSP_ENCODE_RSA_PUBKEY

ISC_CSP_ENCODE_RSA_PRIKEY