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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/chacha20/chacha20.odin
+5 -11
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@@ -27,12 +27,8 @@ Context :: struct {
// init inititializes a Context for ChaCha20 or XChaCha20 with the provided
// key and iv.
init :: proc(ctx: ^Context, key, iv: []byte, impl := DEFAULT_IMPLEMENTATION) {
if len(key) != KEY_SIZE {
panic("crypto/chacha20: invalid (X)ChaCha20 key size")
}
if l := len(iv); l != IV_SIZE && l != XIV_SIZE {
panic("crypto/chacha20: invalid (X)ChaCha20 IV size")
}
ensure(len(key) == KEY_SIZE, "crypto/chacha20: invalid (X)ChaCha20 key size")
ensure(len(iv) == IV_SIZE || len(iv) == XIV_SIZE, "crypto/chacha20: invalid (X)ChaCha20 IV size")
k, n := key, iv
@@ -67,16 +63,14 @@ seek :: proc(ctx: ^Context, block_nr: u64) {
// keystream, and writes the resulting output to dst. Dst and src MUST
// alias exactly or not at all.
xor_bytes :: proc(ctx: ^Context, dst, src: []byte) {
assert(ctx._state._is_initialized)
ensure(ctx._state._is_initialized)
src, dst := src, dst
if dst_len := len(dst); dst_len < len(src) {
src = src[:dst_len]
}
if bytes.alias_inexactly(dst, src) {
panic("crypto/chacha20: dst and src alias inexactly")
}
ensure(!bytes.alias_inexactly(dst, src), "crypto/chacha20: dst and src alias inexactly")
st := &ctx._state
#no_bounds_check for remaining := len(src); remaining > 0; {
@@ -114,7 +108,7 @@ xor_bytes :: proc(ctx: ^Context, dst, src: []byte) {
// keystream_bytes fills dst with the raw (X)ChaCha20 keystream output.
keystream_bytes :: proc(ctx: ^Context, dst: []byte) {
assert(ctx._state._is_initialized)
ensure(ctx._state._is_initialized)
dst, st := dst, &ctx._state
#no_bounds_check for remaining := len(dst); remaining > 0; {