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core/crypto: Switch to using ensure

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This commit is contained in:
Yawning Angel
2025-03-23 19:14:33 +09:00
parent dc94452fb9
commit 2f301e46dc
36 changed files with 188 additions and 363 deletions
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core/crypto/aes/aes_gcm.odin
+10 -26
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@@ -36,15 +36,11 @@ init_gcm :: proc(ctx: ^Context_GCM, key: []byte, impl := DEFAULT_IMPLEMENTATION)
//
// dst and plaintext MUST alias exactly or not at all.
seal_gcm :: proc(ctx: ^Context_GCM, dst, tag, iv, aad, plaintext: []byte) {
assert(ctx._is_initialized)
ensure(ctx._is_initialized)
gcm_validate_common_slice_sizes(tag, iv, aad, plaintext)
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")
}
ensure(len(dst) == len(plaintext), "crypto/aes: invalid destination ciphertext size")
ensure(!bytes.alias_inexactly(dst, plaintext), "crypto/aes: dst and plaintext alias inexactly")
if impl, is_hw := ctx._impl.(Context_Impl_Hardware); is_hw {
gcm_seal_hw(&impl, dst, tag, iv, aad, plaintext)
@@ -76,15 +72,11 @@ seal_gcm :: proc(ctx: ^Context_GCM, dst, tag, iv, aad, plaintext: []byte) {
// dst and plaintext MUST alias exactly or not at all.
@(require_results)
open_gcm :: proc(ctx: ^Context_GCM, dst, iv, aad, ciphertext, tag: []byte) -> bool {
assert(ctx._is_initialized)
ensure(ctx._is_initialized)
gcm_validate_common_slice_sizes(tag, iv, aad, ciphertext)
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")
}
ensure(len(dst) == len(ciphertext), "crypto/aes: invalid destination plaintext size")
ensure(!bytes.alias_inexactly(dst, ciphertext), "crypto/aes: dst and ciphertext alias inexactly")
if impl, is_hw := ctx._impl.(Context_Impl_Hardware); is_hw {
return gcm_open_hw(&impl, dst, iv, aad, ciphertext, tag)
@@ -122,21 +114,13 @@ reset_gcm :: proc "contextless" (ctx: ^Context_GCM) {
@(private = "file")
gcm_validate_common_slice_sizes :: proc(tag, iv, aad, text: []byte) {
if len(tag) != GCM_TAG_SIZE {
panic("crypto/aes: invalid GCM tag size")
}
ensure(len(tag) == GCM_TAG_SIZE, "crypto/aes: invalid GCM tag size")
// The specification supports IVs in the range [1, 2^64) bits.
if l := len(iv); l == 0 || u64(l) >= GCM_IV_SIZE_MAX {
panic("crypto/aes: invalid GCM IV size")
}
ensure(len(iv) == 0 || u64(len(iv)) <= GCM_IV_SIZE_MAX, "crypto/aes: invalid GCM IV size")
if aad_len := u64(len(aad)); aad_len > GCM_A_MAX {
panic("crypto/aes: oversized GCM aad")
}
if text_len := u64(len(text)); text_len > GCM_P_MAX {
panic("crypto/aes: oversized GCM src data")
}
ensure(u64(len(aad)) <= GCM_A_MAX, "crypto/aes: oversized GCM aad")
ensure(u64(len(text)) <= GCM_P_MAX, "crypto/aes: oversized GCM data")
}
@(private = "file")