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Fixed encryption password in Microsoft power point 2003 (PPT) file RRS feed

  • Question

  • Hello,

    I would like to know the fixed password to decrypt old powerpoint file. According to specification [MS-OFFCRYPTO].pdf, section 1.3.4 Write protection:

    "The PowerPoint (.ppt) Binary File Format [MS-PPT]: The password is stored in the clear, as described in [MS-PPT], and the document can then be encrypted as described in [MS-PPT] and in this specification. If encryption is used and the user does not supply an encryption password, a fixed password is used."

    The fixed password could not be found in both MS-OFFCRYPTO and MS-PPT specification.

    Please help me on this case.

    Thank

    Tuesday, November 20, 2018 10:24 AM

Answers

  • Hi Phan Tien Hung 93,

    The information you're looking for is in [MS-OFFCRYPTO] Section 2.4.2.3 "Binary Document Write Protection Method 3" which says that the default password used is: 

    "\x2f\x30\x31\x48\x61\x6e\x6e\x65\x73\x20\x52\x75\x65\x73\x63\x68\x65\x72\x2f\x30\x31" 

    or 

    /01Hannes Ruescher/01 

    Best regards,
    Tom Jebo 
    Sr Escalation Engineer
    Microsoft Open Specifications Support

    Friday, November 23, 2018 12:23 AM
    Moderator

All replies

  • Hello Phan Tien Hung,

    Thank you for posting your protocols question. One of our engineers will respond soon.

    Thanks,


    Jeff McCashland | Microsoft Protocols Open Specifications Team

    Tuesday, November 20, 2018 2:47 PM
    Moderator
  • Hi Phan Tien Hung 93,

    The information you're looking for is in [MS-OFFCRYPTO] Section 2.4.2.3 "Binary Document Write Protection Method 3" which says that the default password used is: 

    "\x2f\x30\x31\x48\x61\x6e\x6e\x65\x73\x20\x52\x75\x65\x73\x63\x68\x65\x72\x2f\x30\x31" 

    or 

    /01Hannes Ruescher/01 

    Best regards,
    Tom Jebo 
    Sr Escalation Engineer
    Microsoft Open Specifications Support

    Friday, November 23, 2018 12:23 AM
    Moderator
  • Hello Tom,

    I will try that out.

    Thank for your reply.

    Friday, November 23, 2018 10:32 AM