soft_tls_prf
soft_tls_prf(secret, secretlen, label, labellen,
soft_tls_prf(secret, secretlen, label, labellen,
(void) soft_tls_prf(OBJ_SEC_VALUE(basekey_p),
soft_tls_prf(pmsecret, pmlen, TLS_MASTER_SECRET_LABEL,
soft_tls_prf(NULL, 0, TLS_IV_BLOCK_LABEL,
soft_tls_prf(msecret, mslen, TLS_KEY_EXPANSION_LABEL,