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Fix OpenSSL < 1.0.0 CE.

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GitOrigin-RevId: ff60feca498c350981db6093e283702fe6f5a81f
This commit is contained in:
levlam 2018-04-12 18:12:31 +03:00
parent 717a307ff2
commit 3330d565f6
1 changed files with 18 additions and 0 deletions
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18
tdutils/td/utils/crypto.cpp
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@ -465,6 +465,12 @@ Result<BufferSlice> rsa_encrypt_pkcs1_oaep(Slice public_key, Slice data) {
return Status::Error("Wrong key type, expected RSA");
}
#if OPENSSL_VERSION_NUMBER < 0x10000000L
RSA *rsa = pkey->pkey.rsa;
int outlen = RSA_size(rsa);
BufferSlice res(outlen);
if (RSA_public_encrypt(narrow_cast<int>(data.size()), const_cast<unsigned char *>(data.ubegin()), res.as_slice().ubegin(), rsa, RSA_PKCS1_OAEP_PADDING) != outlen) {
#else
EVP_PKEY_CTX *ctx = EVP_PKEY_CTX_new(pkey, nullptr);
if (!ctx) {
return Status::Error("Cannot create EVP_PKEY_CTX");
@ -486,6 +492,7 @@ Result<BufferSlice> rsa_encrypt_pkcs1_oaep(Slice public_key, Slice data) {
}
BufferSlice res(outlen);
if (EVP_PKEY_encrypt(ctx, res.as_slice().ubegin(), &outlen, data.ubegin(), data.size()) <= 0) {
#endif
return Status::Error("Cannot encrypt");
}
return std::move(res);
@ -509,6 +516,16 @@ Result<BufferSlice> rsa_decrypt_pkcs1_oaep(Slice private_key, Slice data) {
return Status::Error("Wrong key type, expected RSA");
}
#if OPENSSL_VERSION_NUMBER < 0x10000000L
RSA *rsa = pkey->pkey.rsa;
size_t outlen = RSA_size(rsa);
BufferSlice res(outlen);
auto inlen = RSA_private_decrypt(narrow_cast<int>(data.size()), const_cast<unsigned char *>(data.ubegin()), res.as_slice().ubegin(), rsa, RSA_PKCS1_OAEP_PADDING);
if (inlen == -1) {
return Status::Error("Cannot decrypt");
}
res.truncate(inlen);
#else
EVP_PKEY_CTX *ctx = EVP_PKEY_CTX_new(pkey, nullptr);
if (!ctx) {
return Status::Error("Cannot create EVP_PKEY_CTX");
@ -532,6 +549,7 @@ Result<BufferSlice> rsa_decrypt_pkcs1_oaep(Slice private_key, Slice data) {
if (EVP_PKEY_decrypt(ctx, res.as_slice().ubegin(), &outlen, data.ubegin(), data.size()) <= 0) {
return Status::Error("Cannot decrypt");
}
#endif
return std::move(res);
}