BN_exp
int BN_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, BN_CTX *ctx);
LCRYPTO_ALIAS(BN_exp);
LCRYPTO_USED(BN_exp);
CHECK_GOTO(BN_exp(e, a, b, ctx));
CHECK_GOTO(BN_exp(e, a, b, ctx));
CHECK_GOTO(BN_exp(e, a, b, ctx));
CHECK_GOTO(BN_exp(e, a, b, ctx));
if (BN_exp(d, a, b, ctx) <= 0)
bn_check(BN_exp(a, a, p, bmachine.ctx));
bn_check(BN_exp(a, a, p, bmachine.ctx));
bn_check(BN_exp(a, a, p, bmachine.ctx));