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erpt: reimplement the sysmodule (#875)

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* erpt: reimplement the sysmodule

* fatal: update for latest bindings

* erpt: amend logic for culling orphan attachments
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SciresM 2020-04-13 17:07:37 -07:00 • committed by GitHub
parent eca5ac01b8
commit 79b9e07ee9
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117 changed files with 6716 additions and 59 deletions
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33
libraries/libvapours/include/vapours/crypto/impl/crypto_rsa_oaep_impl.hpp
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@ -71,6 +71,39 @@ namespace ams::crypto::impl {
public:
RsaOaepImpl() { /* ... */ }
void Encode(void *dst, size_t dst_size, Hash *hash, const void *src, size_t src_size, const void *salt, size_t salt_size) {
u8 label_digest[HashSize];
ON_SCOPE_EXIT { ClearMemory(label_digest, HashSize); };
hash->GetHash(label_digest, HashSize);
return this->Encode(dst, dst_size, label_digest, sizeof(label_digest), src, src_size, salt, salt_size);
}
void Encode(void *dst, size_t dst_size, const void *label_digest, size_t label_digest_size, const void *src, size_t src_size, const void *salt, size_t salt_size) {
/* Check our preconditions. */
AMS_ASSERT(dst_size >= 2 * HashSize + 2 + src_size);
AMS_ASSERT(salt_size > 0);
AMS_ASSERT(salt_size == HashSize);
AMS_ASSERT(label_digest_size == HashSize);
u8 *buf = static_cast<u8 *>(dst);
buf[0] = HeadMagic;
u8 *seed = buf + 1;
std::memcpy(seed, salt, HashSize);
u8 *db = seed + HashSize;
std::memcpy(db, label_digest, HashSize);
std::memset(db + HashSize, 0, dst_size - 2 * HashSize - 2 - src_size);
u8 *msg = buf + dst_size - src_size - 1;
*(msg++) = 0x01;
std::memcpy(msg, src, src_size);
ApplyMGF1(db, dst_size - (1 + HashSize), seed, HashSize);
ApplyMGF1(seed, HashSize, db, dst_size - (1 + HashSize));
}
size_t Decode(void *dst, size_t dst_size, const void *label_digest, size_t label_digest_size, u8 *buf, size_t buf_size) {
/* Check our preconditions. */
AMS_ABORT_UNLESS(dst_size > 0);