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Fix ECDH calc secret.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
This commit is contained in:
Pol Henarejos
2022-04-25 19:41:06 +02:00
parent d87334bfbc
commit e2c8d2e0aa
1 changed files with 2 additions and 3 deletions
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5
src/openpgp/openpgp.c
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@@ -1210,13 +1210,12 @@ static int cmd_pso() {
return SW_DATA_INVALID(); return SW_DATA_INVALID();
} }
size_t olen = 0; size_t olen = 0;
res_APDU[0] = 0x04; r = mbedtls_ecdh_calc_secret(&ctx, &olen, res_APDU, MBEDTLS_ECP_MAX_BYTES, random_gen, NULL);
r = mbedtls_ecdh_calc_secret(&ctx, &olen, res_APDU+1, MBEDTLS_ECP_MAX_BYTES, random_gen, NULL);
if (r != 0) { if (r != 0) {
mbedtls_ecdh_free(&ctx); mbedtls_ecdh_free(&ctx);
return SW_EXEC_ERROR(); return SW_EXEC_ERROR();
} }
res_APDU_size = olen+1; res_APDU_size = olen;
mbedtls_ecdh_free(&ctx); mbedtls_ecdh_free(&ctx);
} }
} }