When PKCS_RC2_CBC_PARAMETERS or szOID_RSA_RC2CBC are used for the lpszStructType with CryptEncodeObject, CryptEncodeObjectEx, CryptDecodeObject, or CryptDecodeObjectEx the following details apply.
"1.2.840.113549.3.2"
pvStructInfo points to a CRYPT_RC2_CBC_PARAMETERS structure. See it for details.