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make crypto functions allocate the output

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This commit is contained in:
Antoni Piasecki
2026-01-04 10:22:26 +01:00
parent b78223fae7
commit c603d10012
2 changed files with 15 additions and 17 deletions
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12
src/std.zr
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@@ -781,14 +781,16 @@ func crypto.xchacha20._stream[key: ptr, nonce: ptr, out: ptr, len: i64] : void
mem.free(nonce12)
mem.free(subkey)
func crypto.xchacha20.xor[key: ptr, nonce: ptr, input: ptr, out: ptr, len: i64] : void
func crypto.xchacha20.xor[key: ptr, nonce: ptr, input: ptr, len: i64] : ptr
if len <= 0
return 0
return dbg.panic("empty buffer passed to crypto.xchacha20.xor")
let out: ptr = mem.alloc(len)
let ks: ptr = mem.alloc(len)
crypto.xchacha20._stream(key, nonce, ks, len)
for i in 0..len
mem.write8(out + i, input[i] ^ ks[i])
mem.free(ks)
return out
func crypto.x25519.carry[elem: ptr] : void
for i in 0..16
@@ -877,7 +879,7 @@ func crypto.x25519.pack[out: ptr, input: ptr] : void
mem.free(t)
mem.free(m)
func crypto.x25519.scalarmult[out: ptr, scalar: ptr, point: ptr] : void
func crypto.x25519.scalarmult[scalar: ptr, point: ptr] : ptr
let clamped: ptr = mem.alloc(32)
let a: ptr = mem.alloc(16 * 8)
let b: ptr = mem.alloc(16 * 8)
@@ -939,6 +941,7 @@ func crypto.x25519.scalarmult[out: ptr, scalar: ptr, point: ptr] : void
crypto.x25519.finverse(c, c)
crypto.x25519.fmul(a, a, c)
let out: ptr = mem.alloc(32)
crypto.x25519.pack(out, a)
mem.free(clamped)
@@ -949,4 +952,5 @@ func crypto.x25519.scalarmult[out: ptr, scalar: ptr, point: ptr] : void
mem.free(e)
mem.free(f)
mem.free(x)
mem.free(magic)
mem.free(magic)
return out