telackey/sodium-javascript
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alloc clen/mlen to be specified

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This commit is contained in:
Christophe Diederichs 2020-05-08 22:33:18 +02:00
parent fd7372df04
commit 3f7f9d7905
1 changed files with 12 additions and 0 deletions
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12
crypto_stream_chacha20.js
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@ -11,11 +11,15 @@ exports.crypto_stream_chacha20_ietf_NONCEBYTES = 12
exports.crypto_stream_chacha20_ietf_MESSAGEBYTES_MAX = 2 ** 32
exports.crypto_stream_chacha20 = function (c, clen, n, k) {
if (clen) return exports.crypto_stream_chacha20(c.subarray(0, clen), null, n, k)
c.fill(0)
exports.crypto_stream_chacha20_xor(c, 0, c, 0, 0, n, k)
}
exports.crypto_stream_chacha20_xor = function (c, cpos, m, mpos, clen, n, k) {
if (clen && clen > 0) return exports.crypto_stream_chacha20_xor(c.subarray(0, clen), null, m.subarray(0, clen), null, null, n, k)
assert(n.byteLength === exports.crypto_stream_chacha20_NONCEBYTES,
'n should be crypto_stream_chacha20_NONCEBYTES')
assert(k.byteLength === exports.crypto_stream_chacha20_KEYBYTES,
@ -27,6 +31,8 @@ exports.crypto_stream_chacha20_xor = function (c, cpos, m, mpos, clen, n, k) {
}
exports.crypto_stream_chacha20_xor_ic = function (c, m, mlen, n, ic, k) {
if (mlen) return exports.crypto_stream_chacha20_xor_ic(c, m.subarray(0, mlen), null, n, ic, k)
assert(n.byteLength === exports.crypto_stream_chacha20_NONCEBYTES,
'n should be crypto_stream_chacha20_NONCEBYTES')
assert(k.byteLength === exports.crypto_stream_chacha20_KEYBYTES,
@ -47,11 +53,15 @@ exports.crypto_stream_chacha20_xor_instance = function (n, k) {
}
exports.crypto_stream_chacha20_ietf = function (c, clen, n, k) {
if (clen) return exports.crypto_stream_chacha20_ietf(c.subarray(0, clen), null, n, k)
c.fill(0)
exports.crypto_stream_chacha20_ietf_xor(c, 0, c, 0, 0, n, k)
}
exports.crypto_stream_chacha20_ietf_xor = function (c, cpos, m, mpos, clen, n, k) {
if (clen) return exports.crypto_stream_chacha20_ietf_xor(c.subarray(0, clen), null, m.subarray(0, clen), null, null, n, k)
assert(n.byteLength === exports.crypto_stream_chacha20_ietf_NONCEBYTES,
'n should be crypto_stream_chacha20_ietf_NONCEBYTES')
assert(k.byteLength === exports.crypto_stream_chacha20_ietf_KEYBYTES,
@ -63,6 +73,8 @@ exports.crypto_stream_chacha20_ietf_xor = function (c, cpos, m, mpos, clen, n, k
}
exports.crypto_stream_chacha20_ietf_xor_ic = function (c, m, mlen, n, ic, k) {
if (mlen) return exports.crypto_stream_chacha20_ietf_xor_ic(c, m.subarray(0, mlen), null, n, ic, k)
assert(n.byteLength === exports.crypto_stream_chacha20_ietf_NONCEBYTES,
'n should be crypto_stream_chacha20_ietf_NONCEBYTES')
assert(k.byteLength === exports.crypto_stream_chacha20_ietf_KEYBYTES,