"PKCS #1: RSA Cryptography Standard". RSA Laboratories. https://www.emc.com/emc-plus/rsa-labs/standards-initiatives/pkcs-rsa-cryptography-standard.htm
"PKCS #3: Diffie-Hellman Key Agreement Standard". RSA Laboratories. https://www.emc.com/emc-plus/rsa-labs/standards-initiatives/pkcs-3-diffie-hellman-key-agreement-standar.htm
"PKCS #5: Password-Based Cryptography Standard". RSA Laboratories. Archived from the original on April 7, 2015. https://web.archive.org/web/20150407110829/https://www.emc.com/emc-plus/rsa-labs/standards-initiatives/pkcs-5-password-based-cryptography-standard.htm
"PKCS #5 v2.0: Password-Based Cryptography Standard" (PDF). RSA Laboratories. March 25, 1999. Retrieved May 30, 2024. https://www.foo.be/docs/opensst/ref/pkcs/pkcs-5v2/pkcs5v2-0.pdf
"PKCS #6: Extended-Certificate Syntax Standard". RSA Laboratories. https://www.emc.com/emc-plus/rsa-labs/standars-initiatives/pkcs-6-extended-certificate-syntax-standard.htm
"PKCS #7: Cryptographic Message Syntax Standard". RSA Laboratories. https://www.emc.com/emc-plus/rsa-labs/standards-initiatives/pkcs-7-cryptographic-message-syntax-standar.htm
"PKCS #8: Private-Key Information Syntax Standard". RSA Laboratories. https://www.emc.com/emc-plus/rsa-labs/standards-initiatives/pkcs-8-private-key-information-syntax-stand.htm
"PKCS #9: Selected Attribute Types". RSA Laboratories. https://www.emc.com/emc-plus/rsa-labs/standards-initiatives/pkcs-9-selected-attribute-types.htm
"PKCS #10: Certification Request Syntax Standard". RSA Laboratories. https://www.emc.com/emc-plus/rsa-labs/standards-initiatives/pkcs10-certification-request-syntax-standard.htm
"PKCS #11: Cryptographic Token Interface Standard". RSA Laboratories. https://www.emc.com/emc-plus/rsa-labs/standards-initiatives/pkcs-11-cryptographic-token-interface-standard.htm
Security Token/Smartcard Support in FreeOTFE http://www.freeotfe.org/docs/Main/pkcs11_support.htm
"PKCS #12: Personal Information Exchange Syntax Standard". RSA Laboratories. Archived from the original on April 1, 2014. https://web.archive.org/web/20140401120450/http://www.emc.com/emc-plus/rsa-labs/standards-initiatives/pkcs12-personal-information-exchange-syntax-standard.htm
"PKCS #15: Cryptographic Token Information Format Standard". RSA Laboratories. https://www.emc.com/emc-plus/rsa-labs/standards-initiatives/pkcs-15-cryptographic-token-information-format.htm
RSA Laboratories: "PKCS #15: Cryptographic Token Information Format Standard". https://www.emc.com/emc-plus/rsa-labs/standards-initiatives/pkcs-15-cryptographic-token-information-format.htm