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currencies Electronic Invoice Receivers

NOM 151

Trade Practices conservation message (contracts, agreements or commitments)

By Mario Perez Villeda www.facturasat.com


Mobile Phone: 55-3306-5264 E-

mail:

mperez@facturasat.com
• According to the NOM 151 SCFI 2002 sets out the considerations that should be used to protect consumer interests and that should be observed for the conservation of data messages such agreements, contracts or commitments.
• According to Articles 34, 39, 47 and 23 released on 28 September 2001 defined the guidelines whose content should be kept full and unchanged from its generation must be accessible.

Same security used to ensure the integrity and authentication using:

• Electronic Signature
• which is used in the partial file AS1 (Abstracts Sintax Notation) Abstract Syntax Notation.

digital seal certificate.

Traders

canning Who will messages.

information is to be preserved in 1 or more different files and / or other computers. Well as be able to migrate to a digital form.

Where should generate partial files to post ASN1 and contain:

A. - filename.

B. - File type

C. - Content therein.

This in turn will carry a digital short.

Same is calculated according to the partial file or partial file using MD5 digest method (Cryptography).

Electronic File

ASN1 It creates a message containing the following information:

A. - Name the file (which is equal to the name that was originally identified .)

B. - An index that contains the name and summary of each partial file is part of the record.

C. - Identification of the PSC (Lender of NOM 151).

D. - Your digital signature.

This in turn will generate the record of the document and / or electronic documents, images, etc,.

Obtaining consistency

record is received by the service provider 151 NOM who is responsible for issuing the record ASN1 format.

The resulting file can be sent as an attachment by email and / or published on the Web.

"How is a record?.

The lender will form a record ASN1 format containing:

a. - the name of the file where is stored

consistency.

b. - The record sent by the system.

c. - Date and time of creation of the record.

d. - The identification of the provider of the NOM.

e. - Your digital signature.

As you can verify authenticity.

To validate a record is made as follows:

1 .- verify the digital signature of the provider.

2 .- Check the operator's digital signature on the record contained in the record.

3 .- Recalculate included partial file.

ASN1 definition

It identifies the different file types

digital signature is applied

He integrates the timestamp in the date format and time in GMT format or IMT

folio is applied user

and generates the name of the record.

you require further information contact: