SAP ABAP Function Module SSF_KRN_SIGN (SSF Sign (digital signature for a signer)) is used by

• Class (4)
• Function Module (2)
• Program (3)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Class	CL_CFDI_UTILITY_MX Method: SIGN_SIGNED_INFO_STRING	CFDI Digital Invoice MX:Main Functions	ID-LO-MX	APPL	SAP_APPL
2	Class	CL_HR_B2A_DE_PKCS7_ENCRYPT Method: SIGN_ENVELOPE	HR-B2A: Encryption for Health Insurance Fund	PC01B2A	HR	SAP_HRCDE
3	Class	CL_HR_B2A_DE_PKCS7_KK Method: SIGN_ENVELOPE	HR-B2A: B2A Health Insurance Fund Procedure General	PC01B2A	HR	SAP_HRCDE
4	Class	CL_ST_CRYPTO_X509 Method: X509_SIGN	WS Security: X.509 Security Token (Private Key)	SOAP_SECURITY_SAML2	BASIS	SAP_BASIS