util_sha512h
Compute an sha512-half over some data
Behaviour
Compute an
SHA512
hash over the data pointed to byread_ptr
Write the first half of the hash to
write_ptr
Definition
int64_t util_sha512h (
uint32_t write_ptr,
uint32_t write_len,
uint32_t read_ptr,
uint32_t read_len
);
Example
C
uint8_t hash_out[32];
if (util_sha512h(hash_out, 32, data_in_ptr, data_in_len) < 0)
rollback("Could not generate Hash", 23, 1);
Parameters
Name
Type
Description
write_ptr
uint32_t
Pointer to a buffer the hash will be written to
write_len
uint32_t
Length of output buffer, should be at least 32.
read_ptr
uint32_t
Pointer to the buffer data will be read from (to compute the hash over)
read_len
uint32_t
Length of input data
Return Code
Type
Description
int64_t
The number of bytes written, should always be 32.
If negative, an error:
OUT_OF_BOUNDS
- pointers/lengths specified outside of hook memory.
TOO_SMALL
- Output buffer isn't large enough
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