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core/crypto: Enforce aliasing restrictions

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This commit is contained in:
Yawning Angel
2024-07-16 01:29:43 +09:00
parent dcaf085bfa
commit ff13ee3281
3 changed files with 17 additions and 6 deletions
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core/crypto/aes/aes_gcm.odin
+7
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@@ -1,5 +1,6 @@
package aes
import "core:bytes"
import "core:crypto"
import "core:crypto/_aes"
import "core:crypto/_aes/ct64"
@@ -39,6 +40,9 @@ seal_gcm :: proc(ctx: ^Context_GCM, dst, tag, nonce, aad, plaintext: []byte) {
if len(dst) != len(plaintext) {
panic("crypto/aes: invalid destination ciphertext size")
}
if bytes.alias_inexactly(dst, plaintext) {
panic("crypto/aes: dst and plaintext alias inexactly")
}
if impl, is_hw := ctx._impl.(Context_Impl_Hardware); is_hw {
gcm_seal_hw(&impl, dst, tag, nonce, aad, plaintext)
@@ -73,6 +77,9 @@ open_gcm :: proc(ctx: ^Context_GCM, dst, nonce, aad, ciphertext, tag: []byte) ->
if len(dst) != len(ciphertext) {
panic("crypto/aes: invalid destination plaintext size")
}
if bytes.alias_inexactly(dst, ciphertext) {
panic("crypto/aes: dst and ciphertext alias inexactly")
}
if impl, is_hw := ctx._impl.(Context_Impl_Hardware); is_hw {
return gcm_open_hw(&impl, dst, nonce, aad, ciphertext, tag)