In ASN.1 (Abstract Syntax Notation One), lengths are encoded as part of the TLV (Type-Length-Value) structure, where each element consists of: Type: Identifies the data type of the element. Length: Specifies the number of bytes that make up the element’s content. Value: Contains the actual data or content. The Length field in ASN.1 encoding is designed to allow both short […]
“.p7m” and “.p7s” files are both related to PKCS #7 (Public Key Cryptography Standards #7) and are used for secure email and digital signatures. These files encapsulate data with cryptographic signatures and certificates to verify the identity of the sender and/or the integrity of the message. 1. “.p7m” File (Signed and Encrypted Content) Description: A “.p7m” file is a digitally […]
In the OCSP (Online Certificate Status Protocol), the nonce is an optional field used to prevent replay attacks by ensuring that the OCSP response corresponds to the specific OCSP request. The nonce is a randomly generated value included in the OCSP request and echoed back in the response by the OCSP server. Nonce Length in OCSP There is no strict […]
Here are examples for code signing with a USB token.. AutoIt Code Signing using Sectigo USB Token C Code Signing using Sectigo USB Token Python Code Signing using Sectigo USB Token C++ Code Signing using Sectigo USB Token C# Code Signing using Sectigo USB Token DataFlex Code Signing using Sectigo USB Token Delphi Code Signing using Sectigo USB Token .NET […]
As of 14-Oct-2024, Wasabi (an S3 compatible service), does not understand that uppercase/lowercase hex should not matter.. <Error> <Code>XAmzContentSHA256Mismatch</Code> <Message>The provided ‘x-amz-content-sha256’ header does not match what was computed.</Message> <ClientComputedContentSHA256>8AFBD736EC2917807F5FF5D8A9018846AA9D6B25EC839506DACE0D588DE491C5</ClientComputedContentSHA256> <S3ComputedContentSHA256>8afbd736ec2917807f5ff5d8a9018846aa9d6b25ec839506dace0d588de491c5</S3ComputedContentSHA256> <RequestId>…</RequestId> <HostId>…</HostId> <CMReferenceId>…</CMReferenceId> </Error>
Sending GMail from a Google Service Account can be a complicated undertaking w.r.t. setting things up in your Google account correctly. If something is not correct, the only indication of an error will be that the SMTP authentication fails. The best one can do is to first fully understand Google Service Accounts: Explaining Google Service Accounts Then read about […]
To use a Google Service Account to send emails from your Gmail account in a back-end process, you will need to follow a few steps to enable service account access and authenticate it correctly using OAuth 2.0. This process typically involves using domain-wide delegation if you’re accessing user data (such as sending email on behalf of a Gmail account). Steps […]
Google Service Accounts are special types of Google accounts that are used by applications or virtual machines to authenticate and interact with Google services without the need for a user to be present. Service accounts are commonly used for server-to-server interactions and allow applications to access Google APIs and resources on behalf of users or the application itself. Key Characteristics […]
Unsigned signature fields in a PDF are placeholders for digital signatures that can be added to a PDF document at a later time. These fields are often created by the author or originator of the document, and they indicate where and how a digital signature should be placed. When the document is distributed, recipients can then use these fields to […]
The “signingTime” authenticated attribute in PKCS #7 (now part of Cryptographic Message Syntax or CMS) signatures is an optional attribute that indicates the date and time when the digital signature was created. It is commonly included in signed-data objects to provide a timestamp that can help verify when a signature was applied. Detailed Explanation: Attribute OID: The “signingTime” attribute is […]