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Fix #194 ... hash digest() can be called multiple times and on partial content #199

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Fix #194 ... hash digest() can be called multiple times and on partial content #199

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8 changes: 6 additions & 2 deletions ports/esp32/moduhashlib.c
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Original file line number Diff line number Diff line change
Expand Up @@ -88,7 +88,9 @@ STATIC mp_obj_t sha256_digest(mp_obj_t self_in) {
mp_obj_hash_t *self = MP_OBJ_TO_PTR(self_in);
vstr_t vstr;
vstr_init_len(&vstr, 32);
mbedtls_sha256_finish(&self->state.sha256, (unsigned char *)vstr.buf);
mbedtls_sha256_context ctx;
mbedtls_sha256_clone(&ctx, (const mbedtls_sha256_context *)&self->state.sha256);
mbedtls_sha256_finish(&ctx, (unsigned char *)vstr.buf);
return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
}
MP_DEFINE_CONST_FUN_OBJ_1(sha256_digest_obj, sha256_digest);
Expand All @@ -97,7 +99,9 @@ STATIC mp_obj_t sha1_digest(mp_obj_t self_in) {
mp_obj_hash_t *self = MP_OBJ_TO_PTR(self_in);
vstr_t vstr;
vstr_init_len(&vstr, 20);
mbedtls_sha1_finish(&self->state.sha1, (unsigned char *)vstr.buf);
mbedtls_sha1_context ctx;
mbedtls_sha1_clone(&ctx, (const mbedtls_sha1_context *)&self->state.sha256);
mbedtls_sha1_finish(&ctx, (unsigned char *)vstr.buf);
return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
}
MP_DEFINE_CONST_FUN_OBJ_1(sha1_digest_obj, sha1_digest);
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