static int rc4_hmac_md5_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len)
{
EVP_RC4_HMAC_MD5 *key = data(ctx);
#if defined(STITCHED_CALL)
size_t rc4_off = 32-1-(key->ks.x&(32-1)), /* 32 is $MOD from rc4_md5-x86_64.pl */
md5_off = MD5_CBLOCK-key->md.num,
blocks;
unsigned int l;
extern unsigned int OPENSSL_ia32cap_P[];
#endif
size_t plen = key->payload_length;
if (plen!=NO_PAYLOAD_LENGTH && len!=(plen+MD5_DIGEST_LENGTH)) return 0;
if (ctx->encrypt) {
if (plen==NO_PAYLOAD_LENGTH) plen = len;
#if defined(STITCHED_CALL)
/* cipher has to "fall behind" */
if (rc4_off>md5_off) md5_off+=MD5_CBLOCK;
if (plen>md5_off && (blocks=(plen-md5_off)/MD5_CBLOCK) &&
(OPENSSL_ia32cap_P[0]&(1<<20))==0) {
OpensslMD5_Update(&key->md,in,md5_off);
RC4(&key->ks,rc4_off,in,out);
rc4_md5_enc(&key->ks,in+rc4_off,out+rc4_off,
&key->md,in+md5_off,blocks);
blocks *= MD5_CBLOCK;
rc4_off += blocks;
md5_off += blocks;
key->md.Nh += blocks>>29;
key->md.Nl += blocks<<=3;
if (key->md.Nl<(unsigned int)blocks) key->md.Nh++;
} else {
static int update(EVP_MD_CTX *ctx,const void *data,size_t count)
{ return OpensslMD5_Update(ctx->md_data,data,count); }
