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Does anyone know what encryption algorithm is used to protect my Firefox user IDs & passwords on my computer & the bit-length of the Master Password?

Posted

I expect to see AES algoritym and at least 256 bit password length (or better) to protect the ID/Password file on my computer. If not, then I will stick with my third-party password manager application.

I expect to see AES algoritym and at least 256 bit password length (or better) to protect the ID/Password file on my computer. If not, then I will stick with my third-party password manager application.

Chosen solution

Firefox's Master Password implementation has been criticized for only hashing once. An update to the NSS library released last week will now hash 10,000 times by default (if I'm reading the following correctly). Applications can specify a lower value, so I don't know how many iterations Firefox will actually use (performance could be a consideration?). This is expected to roll out in Firefox 72 in January after the completion of beta testing.

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Additional System Details

Installed Plug-ins

  • Shockwave Flash 32.0 r0

Application

  • Firefox 71.0
  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:71.0) Gecko/20100101 Firefox/71.0
  • Support URL: https://support.mozilla.org/1/firefox/71.0/Darwin/en-US/

Extensions

  • Amazon.com 1.1 (amazondotcom@search.mozilla.org)
  • Bing 1.0 (bing@search.mozilla.org)
  • DuckDuckGo 1.0 (ddg@search.mozilla.org)
  • eBay 1.0 (ebay@search.mozilla.org)
  • Google 1.0 (google@search.mozilla.org)
  • Twitter 1.0 (twitter@search.mozilla.org)
  • Wikipedia (en) 1.0 (wikipedia@search.mozilla.org)

Javascript

  • incrementalGCEnabled: True

Graphics

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  • crashGuards: []
  • driverDate:
  • driverVendor:
  • driverVersion:
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  • webgl1Extensions: ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_disjoint_timer_query EXT_float_blend EXT_frag_depth EXT_shader_texture_lod EXT_sRGB EXT_texture_compression_rgtc EXT_texture_filter_anisotropic OES_element_index_uint OES_fbo_render_mipmap OES_standard_derivatives OES_texture_float OES_texture_float_linear OES_texture_half_float OES_texture_half_float_linear OES_vertex_array_object WEBGL_color_buffer_float WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context
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cor-el
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See Password Encryption: *https://hg.mozilla.org/releases/mozilla-release/raw-file/7fd12a78625c6f1725f64a42d7f4f8dbfeff7177/security/nss/doc/html/pk12util.html
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Question owner

Sorry, PKCS is the basis for HTTPS communications. I am asking about how the the database file for the Firefox ID's and passwords is encrypted. The underlying question I have is "Can I trust the security used to encrypt the password data file or is it just "pretend" security?" If I create a strong password for my financial IDs and the database encryption can be easily decrypted by a hacker, I'm screwed.

FYI - I am using an application called Web Confidential to store my ID/password records. It uses the Blowfish encryption algorithm with a 256 bit master password.

Sorry, PKCS is the basis for HTTPS communications. I am asking about how the the database file for the Firefox ID's and passwords is encrypted. The underlying question I have is "Can I trust the security used to encrypt the password data file or is it just "pretend" security?" If I create a strong password for my financial IDs and the database encryption can be easily decrypted by a hacker, I'm screwed. FYI - I am using an application called Web Confidential to store my ID/password records. It uses the Blowfish encryption algorithm with a 256 bit master password.
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Zack 1 solutions 51 answers

I believe you may find an answer on this thread: https://support.mozilla.org/en-US/questions/1041243 cor-el gives an excellent description of what happens to passwords

I believe you may find an answer on this thread: https://support.mozilla.org/en-US/questions/1041243 cor-el gives an excellent description of what happens to passwords
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Question owner

It is like playing the game of "Hot & Cold". We are getting "Warm". Identifying the name of the "key file" is good. The question now becomes "How is the key file encrypted?" It cannot be just plain text.

Perhaps someone from the Mozilla staff can answer my question. Do they have a moderator for this forum?

Thank you for your help.

It is like playing the game of "Hot & Cold". We are getting "Warm". Identifying the name of the "key file" is good. The question now becomes "How is the key file encrypted?" It cannot be just plain text. Perhaps someone from the Mozilla staff can answer my question. Do they have a moderator for this forum? Thank you for your help.
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Zack 1 solutions 51 answers

cor-el is a moderator of this forum.

cor-el is a moderator of this forum.
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Zack 1 solutions 51 answers

Anyways, here's what firefox says regarding that: "Even though the Password Manager stores your usernames and passwords on your hard drive in an encrypted format, someone with access to your computer user profile can still see or use them. The Use a Master Password to protect stored logins and passwords article shows you how to prevent this and keep you protected in the event your computer is lost or stolen." ~ https://support.mozilla.org/en-US/kb/password-manager-remember-delete-edit-logins

Anyways, here's what firefox says regarding that: "Even though the Password Manager stores your usernames and passwords on your hard drive in an encrypted format, someone with access to your computer user profile can still see or use them. The Use a Master Password to protect stored logins and passwords article shows you how to prevent this and keep you protected in the event your computer is lost or stolen." ~ https://support.mozilla.org/en-US/kb/password-manager-remember-delete-edit-logins
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Zack 1 solutions 51 answers

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If you want an exact answer as to how the encryptor / decryptor works, it uses hashes. Taken from https://archive.mozilla.org/pub/firefox/releases/71.0/source/ , here is the firefox-71.0/services/crypto/modules/utils.js on pastebin: https://pastebin.com/URTDppdB

If you want an exact answer as to how the encryptor / decryptor works, it uses hashes. Taken from https://archive.mozilla.org/pub/firefox/releases/71.0/source/ , here is the firefox-71.0/services/crypto/modules/utils.js on pastebin: https://pastebin.com/URTDppdB
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jscher2000
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Firefox's Master Password implementation has been criticized for only hashing once. An update to the NSS library released last week will now hash 10,000 times by default (if I'm reading the following correctly). Applications can specify a lower value, so I don't know how many iterations Firefox will actually use (performance could be a consideration?). This is expected to roll out in Firefox 72 in January after the completion of beta testing.

Firefox's Master Password implementation has been criticized for only hashing once. An update to the NSS library released last week will now hash 10,000 times by default (if I'm reading the following correctly). Applications can specify a lower value, so I don't know how many iterations Firefox will actually use (performance could be a consideration?). This is expected to roll out in Firefox 72 in January after the completion of beta testing. * https://developer.mozilla.org/docs/Mozilla/Projects/NSS/NSS_3.48_release_notes#Notable_Changes_in_NSS_3.48 * https://bugzilla.mozilla.org/show_bug.cgi?id=1592007
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Thank you Zack & jsher2000. The last two replies helped a lot.

A hash algorithm was not what I was hoping to see used by Firefox. I can understand the many design requirements that need to be met when implementing security for the IDs & passwords.

Thank you Zack & jsher2000. The last two replies helped a lot. A hash algorithm was not what I was hoping to see used by Firefox. I can understand the many design requirements that need to be met when implementing security for the IDs & passwords.
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