1.验证签名 { [self generateRSAKeyPair:kRSA_KEY_SIZE]; NSData *ttDt = [" dataUsingEncoding:NSASCIIStringEncoding]; NSData *sha1dg = [ttDt hashDataWith:CCDIGEST_SHA1]; OSStatus ret; //私钥签名,公钥验证签名 size_t siglen = SecKeyGetBlockSize(privateKeyRef); uint8_t *