sha256.c File Reference

Implements OP_OPENSSL_SHA256 to compute a SHA-256 hash in hex. More...

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Functions
	free_value (vdata)
	if (!s)
	free (s)
	free (hex)
	push_value (vm, out)

Variables
case	OP_OPENSSL_SHA256
char *	s = value_to_string_alloc(&vdata)
char *	hex = fun_openssl_sha256_hex((const unsigned char *)s, strlen(s))
Value	out = make_string(hex)
	break

Detailed Description

Implements OP_OPENSSL_SHA256 to compute a SHA-256 hash in hex.

Behavior:

• Pops one value from the VM stack and converts it to bytes by first producing its string form with value_to_string_alloc().
• Computes the SHA-256 digest via fun_openssl_sha256_hex() and pushes the lowercase hexadecimal string.
• On allocation or hashing failure, pushes an empty string ("").

Notes:

• Non-string inputs are allowed; values are stringified first.
• Snippet is included by vm.c and executed for OP_OPENSSL_SHA256.

Errors:

• No hard VM error is raised; failures push an empty string.

Definition in file sha256.c.

Function Documentation

free() [1/2]

free

(

hex

)

free() [2/2]

free

(

s

)

free_value()

free_value

(

vdata

)

if()

if

(

!

s

)

Definition at line 33 of file sha256.c.

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push_value()

push_value	(	vm	,
		out	)

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Variable Documentation

break

break

Definition at line 46 of file sha256.c.

hex

char* hex = fun_openssl_sha256_hex((const unsigned char *)s, strlen(s))

Definition at line 37 of file sha256.c.

OP_OPENSSL_SHA256

case OP_OPENSSL_SHA256

Definition at line 29 of file sha256.c.

out

Value out = make_string(hex)

Definition at line 43 of file sha256.c.

s

char* s = value_to_string_alloc(&vdata)

Definition at line 31 of file sha256.c.