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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Missing Constant Binding: How to Use RSA-PSS/SHA256 Signature Method","articleBody":"The constant corresponding to the C identifier `xmlSecOpenSSLTransformRsaPssSha256Id` is not exposed in `xmlsec.constants` in the current Python bindings.\n\nThis prevents the use of the RSA-PSS/SHA256 signature algorithm when using high-level utility functions like `xmlsec.template.create()`, which strictly require a `__Transform` object instead of a URI string.\n\nTo properly expose this constant, the following line should be added to the `src/xmlsec/constants.c` file within the transforms block, following the pattern of other transforms:\n\n`PYXMLSEC_ADD_TRANSFORM_CONSTANT(OpenSSLTransformRsaPssSha256, \"RSA_PSS_SHA256\");`\n\nThis change enables users with the compiled binding to utilize:\n\n`from xmlsec.constants import OpenSSLTransformRsaPssSha256`","author":{"url":"https://github.com/raquelpanapalen","@type":"Person","name":"raquelpanapalen"},"datePublished":"2025-11-06T11:01:03.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/395/python-xmlsec/issues/395"}