


#include "internal/deprecated.h"

#include <string.h>
#include "prov/md5_sha1.h"
#include <openssl/evp.h>

int ossl_md5_sha1_init(MD5_SHA1_CTX *mctx)
{
    if (!MD5_Init(&mctx->md5))
        return 0;
    return SHA1_Init(&mctx->sha1);
}

int ossl_md5_sha1_update(MD5_SHA1_CTX *mctx, const void *data, size_t count)
{
    if (!MD5_Update(&mctx->md5, data, count))
        return 0;
    return SHA1_Update(&mctx->sha1, data, count);
}

int ossl_md5_sha1_final(unsigned char *md, MD5_SHA1_CTX *mctx)
{
    if (!MD5_Final(md, &mctx->md5))
        return 0;
    return SHA1_Final(md + MD5_DIGEST_LENGTH, &mctx->sha1);
}

int ossl_md5_sha1_ctrl(MD5_SHA1_CTX *mctx, int cmd, int mslen, void *ms)
{
    unsigned char padtmp[48];
    unsigned char md5tmp[MD5_DIGEST_LENGTH];
    unsigned char sha1tmp[SHA_DIGEST_LENGTH];

    if (cmd != EVP_CTRL_SSL3_MASTER_SECRET)
        return -2;

    if (mctx == NULL)
        return 0;

    
    if (mslen != 48)
        return 0;

    

    if (ossl_md5_sha1_update(mctx, ms, mslen) <= 0)
        return 0;

    
    memset(padtmp, 0x36, sizeof(padtmp));

    if (!MD5_Update(&mctx->md5, padtmp, sizeof(padtmp)))
        return 0;

    if (!MD5_Final(md5tmp, &mctx->md5))
        return 0;

    if (!SHA1_Update(&mctx->sha1, padtmp, 40))
        return 0;

    if (!SHA1_Final(sha1tmp, &mctx->sha1))
        return 0;

    

    if (!ossl_md5_sha1_init(mctx))
        return 0;

    if (ossl_md5_sha1_update(mctx, ms, mslen) <= 0)
        return 0;

    
    memset(padtmp, 0x5c, sizeof(padtmp));

    if (!MD5_Update(&mctx->md5, padtmp, sizeof(padtmp)))
        return 0;

    if (!MD5_Update(&mctx->md5, md5tmp, sizeof(md5tmp)))
        return 0;

    if (!SHA1_Update(&mctx->sha1, padtmp, 40))
        return 0;

    if (!SHA1_Update(&mctx->sha1, sha1tmp, sizeof(sha1tmp)))
        return 0;

    

    OPENSSL_cleanse(md5tmp, sizeof(md5tmp));
    OPENSSL_cleanse(sha1tmp, sizeof(sha1tmp));

    return 1;
}
