AI_PKCS_RSAPublicPEM
176 RSA BSAFE Crypto-C Library Reference Manual
AI_PKCS_RSAPublicPEM
Purpose:
This AI is similar to AI_PKCS_RSAPublic except that it uses the Privacy Enhanced Mail
(PEM) format. This AI allows you to parse and create PEM algorithm identifiers such
as used in PEM protocol. You call B_SetAlgorithmInfo to initialize an algorithm
object from the encoded algorithm identifier. You call B_GetAlgorithmInfo with this
AI to create an encoded algorithm identifier from an algorithm object that was created
using AI_PKCS_RSAPublic, AI_PKCS_RSAPublicBER, or AI_PKCS_RSAPublicPEM.
Type of information this allows you to use:
an RFC 1423 identifier that specifies the RSA algorithm for performing public key
encryption as defined in PKCS #1. When encrypting, this algorithm encodes the data
according to block type 02. When decrypting, this algorithm decodes the data from
block type 01. This algorithm info type is intended to process the asymmetric
encryption identifier in a MIC-Info and Key-Info field in a PEM encapsulated header.
Format of info supplied to B_SetAlgorithmInfo:
pointer to a null-terminated string (char *) that gives the RSA identifier. For example,
“RSA”. Space and tab characters are removed from the string before it is copied to the
algorithm object. B_SetAlgorithmInfo returns BE_WRONG_ALGORITHM_INFO if the
algorithm identifier does not specify the RSA algorithm.
Format of info returned by B_GetAlgorithmInfo:
pointer to a null-terminated string that gives the RSA identifier.
Crypto-C procedures to use with algorithm object:
B_EncryptInit, B_EncryptUpdate, B_EncryptFinal, B_DecryptInit,
B_DecryptUpdate, and B_DecryptFinal. Note that B_EncryptUpdate and
B_EncryptFinal require a random algorithm. You may pass
(B_ALGORITHM_OBJ)NULL_PTR for the
randomAlgorithm
argument in B_DecryptUpdate
and B_DecryptFinal.