diff options
Diffstat (limited to 'ext/node/polyfills/_crypto/crypto_browserify/browserify_aes/incr32.js')
-rw-r--r-- | ext/node/polyfills/_crypto/crypto_browserify/browserify_aes/incr32.js | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/ext/node/polyfills/_crypto/crypto_browserify/browserify_aes/incr32.js b/ext/node/polyfills/_crypto/crypto_browserify/browserify_aes/incr32.js new file mode 100644 index 000000000..65172eefb --- /dev/null +++ b/ext/node/polyfills/_crypto/crypto_browserify/browserify_aes/incr32.js @@ -0,0 +1,19 @@ +// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license. +// Copyright 2014-2017 browserify-aes contributors. All rights reserved. MIT license. +// Copyright 2013 Maxwell Krohn. All rights reserved. MIT license. +// Copyright 2009-2013 Jeff Mott. All rights reserved. MIT license. + +export function incr32(iv) { + let len = iv.length; + let item; + while (len--) { + item = iv.readUInt8(len); + if (item === 255) { + iv.writeUInt8(0, len); + } else { + item++; + iv.writeUInt8(item, len); + break; + } + } +} |