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CryptXML Limits

CryptXML defines the following global limits in the Cryptxml.h header file.

Constant/value	Description
CRYPT_XML_BLOB_MAX 0x7FFFFFF8	Encoded data cannot exceed 2 gigabytes (GB).
CRYPT_XML_ID_MAX 256	Id length cannot exceed 256 characters.
CRYPT_XML_URI_MAX 8*1024	URI length cannot exceed 8192 characters.
CRYPT_XML_SIGNATURES_MAX 16	The default maximum number of Signature elements per document. This value can be overridden by specifying a new maximum when passing property values as CRYPT_XML_PROPERTY structures.
CRYPT_XML_TRANSFORM_MAX 16	The maximum number of transforms, represented by CRYPT_XML_ALGORITHM structures, per reference, represented by a CRYPT_XML_REFERENCE structure.
CRYPT_XML_SIGNATURE_VALUE_MAX 2048	The maximum length, in bytes, of a CRYPT_XML_SIGNATURE structure.
CRYPT_XML_DIGEST_VALUE_MAX 128	The maximum length, in bytes, of a digest.
CRYPT_XML_OBJECTS_MAX 256	Used internally to specify the maximum number of Object elements allowed per signature.
CRYPT_XML_REFERENCES_MAX 0x7FF8	The maximum number of Reference elements allowed.

Minimum supported client	Windows 7 [desktop apps only]
Minimum supported server	Windows Server 2008 R2 [desktop apps only]
Header	Cryptxml.h

Build date: 10/26/2012

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