Re: SHA1 Message Digest Getting Generated less than 160 Bits i.e. 152 bits.
Kedar Sabnis wrote: in some specific case SHA1 digest is coming as 152 bits long instead of 160 bits long. All possible 160 bits values have the same chance of being the output of a SHA1 digest, *including* those that comprise long strings of all zeros or all ones. This mean that, statistically, for 256 SHA1 hash values you generate you get one for which the initial byte is all zero. Depending on your code, this may make that value look like it's only 152 bits long instead of 160. __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager majord...@openssl.org
Re: SHA1 Message Digest Getting Generated less than 160 Bits i.e. 152 bits.
On Sat, Sep 25, 2010 at 21:09, Kedar Sabnis wrote: > > HI, > > I am an openSSL User. We implemented SHA1 algorithm. > > Here in some specific case SHA1 digest is coming as 152 bits long instead > of 160 bits long. > > Please suggest if any bug fix is there for this issue. > > Thanking you in anticipation. > > According to *FIPS 180-1*, SHA1 is fixed 160 bit long: http://www.itl.nist.gov/fipspubs/fip180-1.htm But you can truncate the 160 bit result to 152 bit as your like.
SHA1 Message Digest Getting Generated less than 160 Bits i.e. 152 bits.
HI, I am an openSSL User. We implemented SHA1 algorithm. Here in some specific case SHA1 digest is coming as 152 bits long instead of 160 bits long. Please suggest if any bug fix is there for this issue. Thanking you in anticipation. Thanks & Regards, Kedar Anilrao Sabnis Tata Consultancy Services SDF-V GROUND Unit No.130/131,SDF-V Seepz,Andheri(East) Mumbai - 400096,Maharshtra India Mailto: kedar.sab...@tcs.com Website: http://www.tcs.com Experience certainty. IT Services Business Solutions Outsourcing =-=-= Notice: The information contained in this e-mail message and/or attachments to it may contain confidential or privileged information. If you are not the intended recipient, any dissemination, use, review, distribution, printing or copying of the information contained in this e-mail message and/or attachments to it are strictly prohibited. If you have received this communication in error, please notify us by reply e-mail or telephone and immediately and permanently delete the message and any attachments. Thank you
Re: SHA1 Message Digest Getting Generated less than 160 Bits i.e. 152 bits.
Would you perhaps like to explain how you implemented it (i.e., did you include OpenSSL in your own application, or are you trying to use it via a script?)? 152 bits is 8 bits -- one byte -- less than 160 bits. Are you using a library or framework that overwrites the last byte of the buffer with a \0 to prevent C-string buffer-read overruns? -Kyle H On Sat, Sep 25, 2010 at 6:17 AM, Kedar Sabnis wrote: > > HI, > > I am an openSSL User. We implemented SHA1 algorithm. > > Here in some specific case SHA1 digest is coming as 152 bits long instead of > 160 bits long. > > Please suggest if any bug fix is there for this issue. > > Thanking you in anticipation. > > Thanks & Regards, > Kedar Anilrao Sabnis > Tata Consultancy Services > SDF-V GROUND Unit No.130/131,SDF-V > Seepz,Andheri(East) > Mumbai - 400096,Maharshtra > India > Mailto: kedar.sab...@tcs.com > Website: http://www.tcs.com > > Experience certainty. IT Services > Business Solutions > Outsourcing > > > =-=-= > Notice: The information contained in this e-mail > message and/or attachments to it may contain > confidential or privileged information. If you are > not the intended recipient, any dissemination, use, > review, distribution, printing or copying of the > information contained in this e-mail message > and/or attachments to it are strictly prohibited. If > you have received this communication in error, > please notify us by reply e-mail or telephone and > immediately and permanently delete the message > and any attachments. Thank you > > > __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager majord...@openssl.org
SHA1 Message Digest Getting Generated less than 160 Bits i.e. 152 bits.
HI, I am an openSSL User. We implemented SHA1 algorithm. Here in some specific case SHA1 digest is coming as 152 bits long instead of 160 bits long. Please suggest if any bug fix is there for this issue. Thanking you in anticipation. Thanks & Regards, Kedar Anilrao Sabnis Tata Consultancy Services SDF-V GROUND Unit No.130/131,SDF-V Seepz,Andheri(East) Mumbai - 400096,Maharshtra India Mailto: kedar.sab...@tcs.com Website: http://www.tcs.com Experience certainty. IT Services Business Solutions Outsourcing =-=-= Notice: The information contained in this e-mail message and/or attachments to it may contain confidential or privileged information. If you are not the intended recipient, any dissemination, use, review, distribution, printing or copying of the information contained in this e-mail message and/or attachments to it are strictly prohibited. If you have received this communication in error, please notify us by reply e-mail or telephone and immediately and permanently delete the message and any attachments. Thank you
SHA1 Message Digest Getting Generated less than 160 Bits i.e. 152 bits.
HI, I am an openSSL User. We implemented SHA1 algorithm. Here in some specific case SHA1 digest is coming as 152 bits long instead of 160 bits long. Please suggest if any bug fix is there for this issue. Thanking you in anticipation. Thanks & Regards, Kedar Anilrao Sabnis Tata Consultancy Services SDF-V GROUND Unit No.130/131,SDF-V Seepz,Andheri(East) Mumbai - 400096,Maharshtra India Mailto: kedar.sab...@tcs.com Website: http://www.tcs.com Experience certainty. IT Services Business Solutions Outsourcing =-=-= Notice: The information contained in this e-mail message and/or attachments to it may contain confidential or privileged information. If you are not the intended recipient, any dissemination, use, review, distribution, printing or copying of the information contained in this e-mail message and/or attachments to it are strictly prohibited. If you have received this communication in error, please notify us by reply e-mail or telephone and immediately and permanently delete the message and any attachments. Thank you
