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fixup! Implement AES-{128,256}-CCM bindings

This commit is contained in:
Mateusz Lenik 2018-03-08 21:57:39 +01:00
parent dcbb45cc9d
commit 4866e9ff8a
1 changed files with 9 additions and 9 deletions
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18
openssl/src/symm.rs
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@ -405,14 +405,14 @@ impl Crypter {
///
/// When encrypting with AES CCM, the tag length needs to be explicitly set in order
/// to use a value different than the default 12 bytes.
pub fn set_tag_len(&mut self, tag: &[u8]) -> Result<(), ErrorStack> {
pub fn set_tag_len(&mut self, tag_len: usize) -> Result<(), ErrorStack> {
unsafe {
assert!(tag.len() <= c_int::max_value() as usize);
assert!(tag_len <= c_int::max_value() as usize);
// NB: this constant is actually more general than just GCM.
cvt(ffi::EVP_CIPHER_CTX_ctrl(
self.ctx,
ffi::EVP_CTRL_GCM_SET_TAG,
tag.len() as c_int,
tag_len as c_int,
ptr::null_mut(),
)).map(|_| ())
}
@ -422,16 +422,16 @@ impl Crypter {
///
/// The total plaintext or ciphertext length MUST be passed to the cipher when it operates in
/// CCM mode.
pub fn ccm_update(&mut self, input: &[u8])-> Result<(), ErrorStack> {
pub fn set_data_len(&mut self, data_len: usize)-> Result<(), ErrorStack> {
unsafe {
assert!(input.len() <= c_int::max_value() as usize);
assert!(data_len <= c_int::max_value() as usize);
let mut len = 0;
cvt(ffi::EVP_CipherUpdate(
self.ctx,
ptr::null_mut(),
&mut len,
ptr::null_mut(),
input.len() as c_int,
data_len as c_int,
)).map(|_| ())
}
}
@ -652,8 +652,8 @@ pub fn encrypt_aead(
let mut out = vec![0; data.len() + t.block_size()];
if t.is_ccm() {
c.set_tag_len(tag)?;
c.ccm_update(data)?;
c.set_tag_len(tag.len())?;
c.set_data_len(data.len())?;
}
c.aad_update(aad)?;
@ -681,7 +681,7 @@ pub fn decrypt_aead(
if t.is_ccm() {
c.set_tag(tag)?;
c.ccm_update(data)?;
c.set_data_len(data.len())?;
}
c.aad_update(aad)?;