Document encryption is not allowed in FIPS mode

[anil.das]

I am using spire.pdf.5.4.1.nupkg to password protect a pdf document.

When Local Policy on Workstation: System cryptography Use: FIPS compliant algorithms for encryption, hashing, and signing is Enabled, I am receiving the error message "Document encryption is not allowed in FIPS mode".

Method used to encrypt the document: pdf.Security.Encrypt(strPwd);

I also tried using the obsolete methods PdfSecurity.KeySize and PdfSecurity.UserPassword without success.

Please let me know if I am missing anything.

[amy.zhao]

Hi,

Thanks for your inquiry.
Our encryption function only supports RC4 and AES encryption algorithms at present, the supported key length is 40bit,128bit and 256bit. I am afraid that it is not allowed in FIPS mode. Sorry for the inconvenience caused.

Sincerely,
Amy
E-iceblue support team