XilRSA APIs and Descriptions

Functions
void	rsa2048_exp (const unsigned char *base, const unsigned char *modular, const unsigned char *modular_ext, const unsigned char *exponent, unsigned char *result)
	This function is used to encrypt the data using 2048 bit private key. More...
void	rsa2048_pubexp (RSA_NUMBER a, RSA_NUMBER x, unsigned long e, RSA_NUMBER m, RSA_NUMBER rrm)
	This function is used to decrypt the data using 2048 bit public key. More...
void	sha_256 (const unsigned char *in, const unsigned int size, unsigned char *out)
	This function calculates the hash for the input data using SHA-256 algorithm. More...
void	sha2_starts (sha2_context *ctx)
	This function initializes the SHA2 context. More...
void	sha2_update (sha2_context *ctx, unsigned char *input, unsigned int ilen)
	This function adds the input data to SHA256 calculation. More...
void	sha2_finish (sha2_context *ctx, unsigned char *output)
	This function finishes the SHA calculation. More...

Function Documentation

void rsa2048_exp	(	const unsigned char *	base,
		const unsigned char *	modular,
		const unsigned char *	modular_ext,
		const unsigned char *	exponent,
		unsigned char *	result
	)

This function is used to encrypt the data using 2048 bit private key.

Parameters

modular	A char pointer which contains the key modulus
modular_ext	A char pointer which contains the key modulus extension
exponent	A char pointer which contains the private key exponent
result	A char pointer which contains the encrypted data

Returns

None

void rsa2048_pubexp	(	RSA_NUMBER	a,
		RSA_NUMBER	x,
		unsigned long	e,
		RSA_NUMBER	m,
		RSA_NUMBER	rrm
	)

This function is used to decrypt the data using 2048 bit public key.

Parameters

a	RSA_NUMBER containing the decrypted data.
x	RSA_NUMBER containing the input data
e	Unsigned number containing the public key exponent
m	RSA_NUMBER containing the public key modulus
rrm	RSA_NUMBER containing the public key modulus extension.

Returns

None

void sha2_finish	(	sha2_context *	ctx,
		unsigned char *	output
	)

This function finishes the SHA calculation.

Parameters

ctx	Pointer to sha2_context structure that stores status and buffer.
output	Pointer to the calculated hash data.

Returns

None

void sha2_starts

(

sha2_context *

ctx

)

This function initializes the SHA2 context.

Parameters

ctx	Pointer to sha2_context structure that stores status and buffer.

Returns

None

void sha2_update	(	sha2_context *	ctx,
		unsigned char *	input,
		unsigned int	ilen
	)

This function adds the input data to SHA256 calculation.

Parameters

ctx	Pointer to sha2_context structure that stores status and buffer.
input	Pointer to the data to add.
Out	Length of the input data.

Returns

None

void sha_256	(	const unsigned char *	in,
		const unsigned int	size,
		unsigned char *	out
	)

This function calculates the hash for the input data using SHA-256 algorithm.

This function internally calls the sha2_init, updates and finishes functions and updates the result.

Parameters

In	Char pointer which contains the input data.
Size	Length of the input data
Out	Pointer to location where resulting hash will be written.

Returns

None