71 lines
2.7 KiB
Plaintext
71 lines
2.7 KiB
Plaintext
include::../description.adoc[]
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== Noncompliant Code Example
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----
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import javax.crypto.NoSuchPaddingException
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import java.security.NoSuchAlgorithmException
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import javax.crypto.Cipher
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class test {
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fun main(args: Array<String>) {
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try {
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val c1 = Cipher.getInstance("DES") // Noncompliant: DES works with 56-bit keys allow attacks via exhaustive search
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val c7 = Cipher.getInstance("DESede") // Noncompliant: Triple DES is vulnerable to meet-in-the-middle attack
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val c13 = Cipher.getInstance("RC2") // Noncompliant: RC2 is vulnerable to a related-key attack
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val c19 = Cipher.getInstance("RC4") // Noncompliant: vulnerable to several attacks (see https://en.wikipedia.org/wiki/RC4#Security)
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val c25 = Cipher.getInstance("Blowfish") // Noncompliant: Blowfish use a 64-bit block size makes it vulnerable to birthday attacks
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val nc = NullCipher() // Noncompliant: the NullCipher class provides an "identity cipher" one that does not transform or encrypt the plaintext in any way.
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} catch (e: NoSuchAlgorithmException) {
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} catch (e: NoSuchPaddingException) {
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}
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}
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}
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----
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== Compliant Solution
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----
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import javax.crypto.NoSuchPaddingException
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import java.security.NoSuchAlgorithmException
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import javax.crypto.Cipher
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class test {
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fun main(args: Array<String>) {
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try {
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val c31 = Cipher.getInstance("AES/GCM/NoPadding") // Compliant
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} catch (e: NoSuchAlgorithmException) {
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} catch (e: NoSuchPaddingException) {
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}
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}
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}
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----
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== See
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* https://owasp.org/Top10/A02_2021-Cryptographic_Failures/[OWASP Top 10 2021 Category A2] - Cryptographic Failures
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* https://www.owasp.org/index.php/Top_10-2017_A3-Sensitive_Data_Exposure[OWASP Top 10 2017 Category A3] - Sensitive Data Exposure
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* https://mobile-security.gitbook.io/masvs/security-requirements/0x08-v3-cryptography_verification_requirements[Mobile AppSec Verification Standard] - Cryptography Requirements
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* https://owasp.org/www-project-mobile-top-10/2016-risks/m5-insufficient-cryptography[OWASP Mobile Top 10 2016 Category M5] - Insufficient Cryptography
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* https://cwe.mitre.org/data/definitions/327.html[MITRE, CWE-327] - Use of a Broken or Risky Cryptographic Algorithm
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* https://wiki.sei.cmu.edu/confluence/x/hDdGBQ[CERT, MSC61-J.] - Do not use insecure or weak cryptographic algorithms
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* https://www.sans.org/top25-software-errors/#cat3[SANS Top 25] - Porous Defenses
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ifdef::env-github,rspecator-view[]
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'''
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== Implementation Specification
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(visible only on this page)
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include::../message.adoc[]
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'''
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== Comments And Links
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(visible only on this page)
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include::../comments-and-links.adoc[]
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endif::env-github,rspecator-view[]
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