core/crypto: Switch to using ensure

core/crypto/legacy/keccak/keccak.odin

@@ -40,37 +40,37 @@ BLOCK_SIZE_512 :: _sha3.RATE_512
 Context :: distinct _sha3.Context
 
 // init_224 initializes a Context for Keccak-224.
-init_224 :: proc(ctx: ^Context) {
+init_224 :: proc "contextless" (ctx: ^Context) {
 	ctx.mdlen = DIGEST_SIZE_224
 	_init(ctx)
 }
 
 // init_256 initializes a Context for Keccak-256.
-init_256 :: proc(ctx: ^Context) {
+init_256 :: proc "contextless" (ctx: ^Context) {
 	ctx.mdlen = DIGEST_SIZE_256
 	_init(ctx)
 }
 
 // init_384 initializes a Context for Keccak-384.
-init_384 :: proc(ctx: ^Context) {
+init_384 :: proc "contextless" (ctx: ^Context) {
 	ctx.mdlen = DIGEST_SIZE_384
 	_init(ctx)
 }
 
 // init_512 initializes a Context for Keccak-512.
-init_512 :: proc(ctx: ^Context) {
+init_512 :: proc "contextless" (ctx: ^Context) {
 	ctx.mdlen = DIGEST_SIZE_512
 	_init(ctx)
 }
 
 @(private)
-_init :: proc(ctx: ^Context) {
+_init :: proc "contextless" (ctx: ^Context) {
 	ctx.dsbyte = _sha3.DS_KECCAK
 	_sha3.init((^_sha3.Context)(ctx))
 }
 
 // update adds more data to the Context.
-update :: proc(ctx: ^Context, data: []byte) {
+update :: proc "contextless" (ctx: ^Context, data: []byte) {
 	_sha3.update((^_sha3.Context)(ctx), data)
 }
 
@@ -79,17 +79,17 @@ update :: proc(ctx: ^Context, data: []byte) {
 //
 // Iff finalize_clone is set, final will work on a copy of the Context,
 // which is useful for for calculating rolling digests.
-final :: proc(ctx: ^Context, hash: []byte, finalize_clone: bool = false) {
+final :: proc "contextless" (ctx: ^Context, hash: []byte, finalize_clone: bool = false) {
 	_sha3.final((^_sha3.Context)(ctx), hash, finalize_clone)
 }
 
 // clone clones the Context other into ctx.
-clone :: proc(ctx, other: ^Context) {
+clone :: proc "contextless" (ctx, other: ^Context) {
 	_sha3.clone((^_sha3.Context)(ctx), (^_sha3.Context)(other))
 }
 
 // reset sanitizes the Context.  The Context must be re-initialized to
 // be used again.
-reset :: proc(ctx: ^Context) {
+reset :: proc "contextless" (ctx: ^Context) {
 	_sha3.reset((^_sha3.Context)(ctx))
 }