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fix(des): 64 bit block creation

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This commit is contained in:
Kristofers Solo 2025-11-06 11:03:29 +02:00
parent db53ae2ee7
commit 262c7decfe
Signed by: kristoferssolo
GPG Key ID: 74FF8144483D82C8
1 changed files with 7 additions and 9 deletions
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16
des/src/block/block64.rs
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@ -74,11 +74,6 @@ fn parse_string_to_u64(s: &str) -> Result<u64, BlockError> {
return parse_radix(bin_str, 2);
}
// 8-character ASCII string conversion to u64
if trimmed.len() > 8 {
return Err(BlockError::InvalidByteStringLength(trimmed.len()));
}
ascii_string_to_u64(trimmed)
}
@ -92,6 +87,10 @@ fn parse_radix(s: &str, radix: u32) -> Result<u64, BlockError> {
}
fn ascii_string_to_u64(s: &str) -> Result<u64, BlockError> {
if s.len() > 8 {
return Err(BlockError::InvalidByteStringLength(s.len()));
}
if !s.is_ascii() {
return Err(BlockError::conversion_error(
"u64",
@ -99,10 +98,9 @@ fn ascii_string_to_u64(s: &str) -> Result<u64, BlockError> {
));
}
let mut bytes = [0; 8];
for (idx, byte) in s.bytes().enumerate() {
bytes[idx] = byte;
}
let mut bytes = [0u8; 8];
let offset = 8 - s.len();
bytes[offset..].copy_from_slice(s.as_bytes());
Ok(u64::from_be_bytes(bytes))
}