de.softpro.doc.SignRSA Interface Reference

Interface for creating an RSA signature. More...

List of all members.

Public Member Functions
byte[]	sign (Source aSource, int aVersion, int aHashAlgorithm)
	Compute an RSA signature.
int	getSignatureSize ()
	Get the size of the signature that will be computed by sign().
byte[]	getSigningCertificate ()
	Get the signing certificate.
int	getCertificateCount ()
	Get the number of available intermediate certificates.
byte[]	getCertificate (int aIndex)
	Get an intermediate certificate.
String	getErrorMessage ()
	Get an error message for the last operation.
Static Public Attributes
static final int	v_1_5 = 0
	RSA version (padding): RSA 1.5 (PKCS1-v1_5, siganture scheme PKCS #1).
static final int	v_2_0_salt0 = 1
	RSA version (padding): RSA 2.0 (signature scheme RSASSA-PSS) with salt length 0.
static final int	v_2_0_salt32 = 2
	RSA version (padding): RSA 2.0 (signature scheme RSASSA-PSS) with salt length 32.
static final int	v_2_0 = v_2_0_salt0
	Compatibility.
static final int	ha_sha1 = 1
	Hash algorithm: SHA-1.
static final int	ha_sha256 = 2
	Hash algorithm: SHA-256.
static final int	ha_sha384 = 3
	Hash algorithm: SHA-384.
static final int	ha_sha512 = 4
	Hash algorithm: SHA-512.
static final int	ha_ripemd160 = 5
	Hash algorithm: RIPEMD-160.

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Detailed Description

Interface for creating an RSA signature.

Selection of the certificate is up to the implementation.

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Member Function Documentation

byte [] de.softpro.doc.SignRSA.getCertificate

(

int

aIndex )

Get an intermediate certificate.

Parameters:

[in]

aIndex

The zero-based index of the intermediate certificate, see getCertificateCount().

Returns:

The requested intermediate certificate (DER-encoded X.509) or null on error.

int de.softpro.doc.SignRSA.getCertificateCount

(

)

Get the number of available intermediate certificates.

Returns:

The number of available intermediate certificates.

String de.softpro.doc.SignRSA.getErrorMessage

(

)

Get an error message for the last operation.

After any method of this object has been called, this function shall return an error message (possibly empty if the most recently called method didn't fail).

Returns:

An error message (possibly empty if the last operation succeeded).

int de.softpro.doc.SignRSA.getSignatureSize

(

)

Get the size of the signature that will be computed by sign().

Returns:

The size in octets of the signature that will be computed by sign() (ie, the size of the private key in octets) or a negative value on error.

byte [] de.softpro.doc.SignRSA.getSigningCertificate

(

)

Get the signing certificate.

Returns:

The signing certificate (DER-encoded X.509) or null on error.

byte [] de.softpro.doc.SignRSA.sign	(	Source	aSource,
		int	aVersion,
		int	aHashAlgorithm
	)

Compute an RSA signature.

Parameters:

[in]	aSource	An object providing data to be hashed and signed.
[in]	aVersion	RSA version (v_1_5 or v_2_0).
[in]	aHashAlgorithm	Hash algorithm (ha_sha1, ha_sha256, ha_sha384, ha_sha512, or ha_ripemd160).

Returns:

The RSA signature. This shall be just the result of the RSA operation, not wrapped in an OCTET STRING.

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Member Data Documentation

final int de.softpro.doc.SignRSA.ha_ripemd160 = 5 [static]

Hash algorithm: RIPEMD-160.

final int de.softpro.doc.SignRSA.ha_sha1 = 1 [static]

Hash algorithm: SHA-1.

final int de.softpro.doc.SignRSA.ha_sha256 = 2 [static]

Hash algorithm: SHA-256.

final int de.softpro.doc.SignRSA.ha_sha384 = 3 [static]

Hash algorithm: SHA-384.

final int de.softpro.doc.SignRSA.ha_sha512 = 4 [static]

Hash algorithm: SHA-512.

final int de.softpro.doc.SignRSA.v_1_5 = 0 [static]

RSA version (padding): RSA 1.5 (PKCS1-v1_5, siganture scheme PKCS #1).

final int de.softpro.doc.SignRSA.v_2_0 = v_2_0_salt0 [static]

Compatibility.

final int de.softpro.doc.SignRSA.v_2_0_salt0 = 1 [static]

RSA version (padding): RSA 2.0 (signature scheme RSASSA-PSS) with salt length 0.

This is used for signing TIFF documents with method m_digsig_pkcs1.

The hash algorithm passed in aHashAlgorithm of sign() shall also be used for mask generation, the salt length shall be 0.

final int de.softpro.doc.SignRSA.v_2_0_salt32 = 2 [static]

RSA version (padding): RSA 2.0 (signature scheme RSASSA-PSS) with salt length 32.

This is used for PKCS #7 signatures if integer parameter "RSASignatureScheme" is rss_pss.

The hash algorithm passed in aHashAlgorithm of sign() shall also be used for mask generation, the salt length shall be 32.

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The documentation for this interface was generated from the following file:

• de/softpro/doc/SignRSA.java