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RSA in a single step.

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This commit is contained in:
NIIBE Yutaka
2017-10-05 17:06:50 +09:00
parent 183cec8a04
commit 43980d1c81
5 changed files with 97 additions and 119 deletions
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25
src/call-rsa.c
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@@ -237,10 +237,12 @@ rsa_verify (const uint8_t *pubkey, int pubkey_len,
#define RSA_EXPONENT 0x10001
int
rsa_genkey_start (int pubkey_len)
rsa_genkey (int pubkey_len, uint8_t *pubkey, uint8_t *p_q)
{
int ret;
uint8_t index = 0;
uint8_t *p = p_q;
uint8_t *q = p_q + pubkey_len / 2;
int cs;
extern int prng_seed (int (*f_rng)(void *, unsigned char *, size_t),
@@ -258,30 +260,13 @@ rsa_genkey_start (int pubkey_len)
cs = chopstx_setcancelstate (0); /* Allow cancellation. */
MPI_CHK( rsa_gen_key (&rsa_ctx, random_gen, &index, pubkey_len * 8,
RSA_EXPONENT) );
cleanup:
chopstx_setcancelstate (cs);
chopstx_cleanup_pop (0);
if (ret != 0)
return -1;
else
return 0;
}
int
rsa_genkey_finish (int pubkey_len, uint8_t *pubkey, uint8_t *p_q)
{
int ret;
uint8_t *p = p_q;
uint8_t *q = p_q + pubkey_len / 2;
MPI_CHK( mpi_write_binary (&rsa_ctx.P, p, pubkey_len / 2) );
MPI_CHK( mpi_write_binary (&rsa_ctx.Q, q, pubkey_len / 2) );
MPI_CHK( mpi_write_binary (&rsa_ctx.N, pubkey, pubkey_len) );
cleanup:
rsa_free (&rsa_ctx);
chopstx_setcancelstate (cs);
chopstx_cleanup_pop (1);
if (ret != 0)
return -1;
else