PKCS5_PBKDF2_HMAC_SHA1
int PKCS5_PBKDF2_HMAC_SHA1(const char *pass, int passlen,
LCRYPTO_ALIAS(PKCS5_PBKDF2_HMAC_SHA1);
LCRYPTO_USED(PKCS5_PBKDF2_HMAC_SHA1);