Function ACLHashPassword

src/acl.cpp:163–178

Given an SDS string, returns the SHA256 hex representation as a * new SDS string. */

/* Given an SDS string, returns the SHA256 hex representation as a
 * new SDS string. */
sds ACLHashPassword(unsigned char *cleartext, size_t len) {
    SHA256_CTX ctx;
    unsigned char hash[SHA256_BLOCK_SIZE];
    char hex[HASH_PASSWORD_LEN];
    const char *cset = "0123456789abcdef";

    sha256_init(&ctx);
    sha256_update(&ctx,(unsigned char*)cleartext,len);
    sha256_final(&ctx,hash);

    for (int j = 0; j < SHA256_BLOCK_SIZE; j++) {
        hex[j*2] = cset[((hash[j]&0xF0)>>4)];
        hex[j*2+1] = cset[(hash[j]&0xF)];
    }
    return sdsnewlen(hex,HASH_PASSWORD_LEN);
}

/* Given a hash and the hash length, returns C_OK if it is a valid password
 * hash, or C_ERR otherwise. */