KI_RSAPublicBER
286 RSA BSAFE Crypto-C Library Reference Manual
KI_RSAPublicBER
Purpose:
This KI is similar to KI_RSAPublic except that it uses the ASN.1 BER format. This KI
allows you to parse and create an ASN.1 key info type that is encoded with the X.509
standard of SubjectPublicKeyInfo. You call
B_SetKeyInfo to initialize a key object
from the encoded key info type that includes the modulus and public exponent. You
call
B_GetKeyInfo with this KI to create an encoded key info type from a key object
that was created using
KI_RSAPublic, KI_RSAPublicBER, KI_PKCS_RSAPrivate or
KI_PKCS_RSAPrivateBER. The OID for RSA PKCS #1 encryption, excluding the tag and
length bytes, in decimal, is “
42, 134, 72, 134, 247, 13, 1, 1, 1”. Also see
KI_RSAPublic.
Type of information this allows you to use:
the encoding of an RSA public key that is encoded as an X.509 SubjectPublicKeyInfo
type that contains an X.509 RSAPublicKey type (also defined in PKCS #1). Note that
this encoding contains all of the information specified by
KI_RSAPublic.
Format of info supplied to B_SetKeyInfo:
pointer to an ITEM structure that gives the address and length of the BER encoding.
The encoding is converted to DER before it is copied to the key object.
B_SetKeyInfo
returns
BE_WRONG_KEY_INFO if the public key info specifies a public key for an
algorithm other than the RSA algorithm. Note that
B_SetKeyInfo will accept an
encoding that contains an object identifier for
rsa as well as rsaEncryption (defined
in PKCS #1).
Format of info returned by B_GetKeyInfo:
pointer to an ITEM structure that gives the address and length of the DER encoding.
Note that
B_GetKeyInfo returns an encoding that contains the object identifier for
rsaEncryption (defined in PKCS #1) as opposed to rsa.
Can get this info type if key object already has:
KI_RSAPublicBER, KI_RSAPublic, KI_PKCS_RSAPrivate, or KI_PKCS_RSAPrivateBER.
