Key management involves the entire key life-cycle: generation, exchange, storage, safeguarding, use, vetting, revocation, replacement and retirement.

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349 views

How does Wuala store symmetric key?

As far as I understand Wuala (so called secure cloud storage) is not using the original (user provided) password to encrypt data so what role does original password play in their system? I think they ...
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1answer
99 views

Are SSH keys and PGP keys the same thing?

I have a 3072 bit RSA key that I generated for use with SSH. Can this key-pair be used with PGP/GPG, or do I need to generate a new pair of keys separately for use in email encryption? Are the two ...
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2answers
171 views

How do key servers resolve conflicts?

According to the PGP network FAQ While a number of key servers exist, it is only necessary to send your key to one of them. The key server will take care of the job of sending your key to all ...
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1answer
223 views

AES128 and IV for app crypto

We have some columns in some tables that are sensitive and would like to protect them "anyways". Also, since Azure SQL demands application level encryption, we have to roll our own. There would be a ...
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1answer
1k views

Google custom Search Engine api key: is it confidential?

Normally, I'd say yes, api keys should be kept secret, and Google's api console even says that. However, I'm just making an ajax get call and all the info is in the clear on my page in order to ...
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1answer
81 views

help identifying an IP address from email sent from my gmail account

Someone sent the following email from my gmail account. I believe it was hacked and if I can find the IP address I may be able to identify the person who did it. Here is the information. Please let me ...
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1answer
504 views

How to process or manage Key-Encryption-Key using HSM?

Let's consider two Encryption keys: 1.Data-Encryption-Key(DEK) 2.Key-Encryption-Key(KEK) KEK will be securely stored in HSM, which will be encrypted using master key. Data Encryption Key will be ...
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1answer
115 views

Advice on using encryption for self training app

I am self training on using encryption. I am a php developer and in my spare time I am building an online app that provides basic cms features to help me understand encryption design more. I am using ...
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1answer
567 views

How to protect encryption key while application is using it

I made an J2SE application that uses AES (in CBC mode using BouncyCastle library) to encrypt application config file & some user provided files. I stored the raw AES key in a file that is ...
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2answers
1k views

Need example and working Security Token Service (STS)?

Can anyone explain or post any link to a simple example and introduction about the Security Token Service (STS)?
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1answer
62 views

How to validate the confirmation link received when publishing a new PGP key?

I find PGP to be quite a complex subject. I have gotten to a point where I need to give a client a public key for encryption. I have successfully done my homework, generating a public key from my ...
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2answers
69 views

How to setup cronjobs that do scp without saving the .pem file on either of the machines

I have the following situation and want to know what are the best practices to do such things without exposing myself to security issues I have two servers both use the same private key for login. ...
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1answer
161 views

Security implications of setting the same password on private key and PKCS12/JKS?

Are there any negative security implications of setting the private key password (DSA in this case) as a PKCS12 (and then JKS) export password (instead of generating/inventing a new one)? My use case ...
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1answer
64 views

How to restrict access to a resource based on frequency of access?

I want to restrict access to a particular resource based on time (configurable). So suppose user A has time t configured from him. He can access the resource only once every t time units. The values ...
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2answers
331 views

How do I import a PKSC#12 private key into Java 5 (which may require PKCS#7)

I have a newer private key I have to import into an older server. How do I take a newer PKCS12 cert and import it into an older version of java that uses a different format?
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3answers
692 views

Validate hmac with hashed stored key

What if an HMAC is correctly generated and sent with the data to the server, so far I know the server needs to know the original data with which the MAC was created in order to re-create the MAC and ...
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1answer
164 views

How dependable can data encryption be without re-entry of password on startup?

I posted a comment awhile back, and thought I would turn it into a question. Example: There is a feature in the Microsoft SQL Server for full database encryption, which seems to have an option that ...
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1answer
830 views

How do I securely store and retrieve a many-time use key?

I am performing some symmetric database encryption/decryption in .net. I am using a single 256 bit private key. (1) Where do I store this key when not in use? (2) How do I securely retrieve this ...
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1answer
782 views

What is purpose of --s2k-* GnuPG options? [closed]

When I use gpg --symmetric --s2k- and press tab some options appear: --s2k-cipher-algo --s2k-count --s2k-digest-algo --s2k-mode What do those options do?
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1answer
72 views

What are the risks of protecting an API with one key only (without secret)?

I understand that a lot of APIs are protected using a (possibly public) API Key, to identify who is making the request, and a secret to hmac the parameters and determine if the client is actually who ...
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1answer
78 views

GnuPG / OpenPGP: How to eliminate redundancy in PGP private key?

I examined a few randomly generated private keys generated by Gnu PG, and found a lot of redundancy. It is enclosed by -----BEGIN PGP PRIVATE KEY BLOCK----- and -----END PGP PRIVATE KEY BLOCK----- ...
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1answer
41 views

What happens if my signing subkeys are compromised?

Let's say my subkeys are compromised, but my master keypair is safe and secure, so I revoke the old subkeys and issue new ones. With encryption keys, the results are pretty clear: I can still decrypt ...
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1answer
90 views

Can any malware access the OSX keychain data

I'm working on a security project. I have sensitive data that I would like to store in OS X's keychain. I'm able to add the data programmatically into the OS X keychain by using RHKeychain. But after ...
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2answers
253 views

Storing SSH private keys on an Android device

(I'm not sure if this better belongs on unix.se or android.se, but since it's primarily security-related, I'm asking it here) I use my Android device to access servers for quick on-the-go ...
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1answer
140 views

How are private keys (sMIME, PGP, etc) synchronized across a user's devices?

Given that user needs to store a copy of the same private key on each of his devices (in order to decrypt email and other data encrypted with the public key) ... what are some general techniques for ...
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2answers
180 views

Where to store a key for system wide encryption/decryption?

I have a web application where (among other things) customers can upload files and administrators can then download those files. The uploaded files are stored on ServerA and the web application used ...
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1answer
63 views

When does S/MIME require the other party's certificate and when is their key enough?

Trying to understand S/MIME implementation, I see that sometimes you must have the other party's certificate, and sometimes its enough to just have their public key. I'm confused as to when you need ...
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1answer
370 views

Pgp Private key storage on windows server advice

Looking for a bit of advice really, here's the situation: I currently have a security minded client who will be sending PGP encrypted files. I have to decrypt the files on my server before ...
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1answer
103 views

One public key contains all subkeys?

I've created a keypair with gpg2 --gen-key Then I created a subkey only for signing. If I clearly understand the process I have now 3 pub/priv pairs. The master, one for encrypting and one for ...
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1answer
142 views

Which is best DPAPI or HSM?

Can you please explain what's is the main difference between for this both DPAPI and HSM? As far as I understand both protecting the data, the way of protection is difference HSM is physical device ...
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1answer
67 views

Hybrid Encryption System - Is this unnecessary in this case? [closed]

I have a column in my database that I need to encrypt. The column can contain any arbitrary data. What I am thinking is to generate a public and private key pair first. Store the public key in a ...
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1answer
198 views

How to have Thunderbird include a root certificate?

An eMail signed via S/MIME also contains the X.509 certificate chain containing the public key in order to directly verify the signature (assuming its issuing CA is deemed trustworthy). The chain does ...
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1answer
639 views

Smart card compatible with Schlumberger (Gemalto) Cryptoflex 16K and USB reader

Another question related to previous ones A SW system constructed with Microsoft CNG can be FIPS 140-2 Level 2 Compliant? and About performance of Smard card for performing 3DES in a MD5 hash We need ...
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11 views

Pros and cons between HOTP and TOTP [migrated]

I'm reading the RFC6238 (TOTP) and RFC4226 (HOTP) standards and can't get which one is to prefer? I've searched around a bit and it seems like TOTP is the one that is most used, but some argue that ...
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0answers
18 views

How do I display the usage flags for my encryption keys in a less hackish way? [migrated]

I am trying to educate myself on the use of encryption keys and I've been experimenting with this old Linus Torvalds’ key that I found 956EB7BF449FA3AB. I am interested to display the usage flags but ...
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0answers
17 views

Clear EFS Cache at Set Interval

My boss wants to set up encrypted file shares using EFS on Windows Server 2012 R2 Boxes accessed by Windows 8.1 clients. I've been able to set the default DRA, issue certificates in test cases and so ...
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0answers
37 views

NISTIR 7966 (Security of Automated Access Management Using Secure Shell) - is there anything new?

Tatu Ylönen (the creator of SSH protocol) and two others authored a report recently, offering their views on SSH key management. I have read the report, and am struggling to identify whether it is ...
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2answers
64 views

How to properly transition from standard PGP keys to using subkeys?

When I initially set up PGP, PGPTools didn't prompt me to create separate subkeys, as explained in the article "Creating the Perfect PGP Keypair". Now that I've learned a bit more about PGP, I'd like ...
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0answers
29 views

AWS IAM User vs STS

I'm trying to better understand the potential of AWS Secure Token Service, and looking for thoughts on how best to solve a particular problem. Let's say I have a bunch of IAM users that are currently ...
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0answers
71 views

Using SSH Private keys in Production environment

I have a need to scp a bunch of files from a production box to my development environment. I am a developer and have limited read access to the production machines. Instead of entering password for ...
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0answers
109 views

SSH using pre-existing session (symmetric) keys

Is there at present a way to open a SSH connection using pre-existing symmetric session keys? In other words, if I create a list of symmetric keys can I send that list to the recipient on a CD or USB ...
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0answers
131 views

Storing private messages in a database

I am creating a portal where users can send private messages (PMs) for a very large audience. So I want to encrypt the messages and store them in the database. But I do not want to ask the users for ...
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0answers
210 views

What is the preferred way of using AWS (specifically S3) from mobile apps?

Adding the AWS access key and secret key directly in app code is definitely not a good approach, primarily because the app resides on the users device (unlike server side code), and can be reverse ...
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0answers
331 views

How to securely delete an OpenVPN connection profile

I store my OpenVPN profile (keys) in an encrypted drive but I run OpenVPN inside an OS that is not encrypted. When I finish my OpenVPN session and disconnect, the connection profiles are still there ...
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2answers
408 views

GSM A5/1 encryption: Key management

I'm currently studying the A5/1 algorithm used for GSM encryption. I understood how thanks to the symmetric private Key and a public counter frame one can encrypt the communication between A and B. ...
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0answers
245 views

Import securely RSA private key through PKCS#11

I have a cryptographic device that supports the following mechanisms: How I could securely import RSA private key into it? Because there is no support for wrap/unwrap using symmetric key is there ...
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0answers
154 views

“Keyset does not exist” when using SignData function with RSA

"Keyset does not exist". I know that there are tons of question about this error, but mine is totally different. I'm not gona use the key from windows certificate store, but load the public key & ...
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102 views

What are some good design practices for cross-platform certificate storage?

Question from the Bouncy Castle development list: At present we use the Windows certificate store as: var store = new X509Store(StoreName.My, StoreLocation.LocalMachine); ...
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4answers
1k views

Brute forcing ssh keys

My problem is a common one: I deleted my SSH key, and forgot to set rm to point to a .trash file. I have the public key, and I need to get in this server. I am not doing this on anyone else's server. ...
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3answers
446 views

Is using a numbers station to transmit a one-time-pad as key actually insecure?

We all know the two most important problems related to a “one-time-pad”: The one-time-pad needs to be truly random (which I think is logic, as pseudo random generators are quick but predictable). ...