Is the AES key good enough?












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When the System.Security.Cryptography.Aes.Create(algorithmName) method is called, a new key and IV are generated. Are these good enough to use?










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    0















    When the System.Security.Cryptography.Aes.Create(algorithmName) method is called, a new key and IV are generated. Are these good enough to use?










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      0












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      0








      When the System.Security.Cryptography.Aes.Create(algorithmName) method is called, a new key and IV are generated. Are these good enough to use?










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      When the System.Security.Cryptography.Aes.Create(algorithmName) method is called, a new key and IV are generated. Are these good enough to use?







      cryptography bcl system.security






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      asked Nov 16 '18 at 14:37









      Old GeezerOld Geezer

      3,8601149100




      3,8601149100
























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          Those values are safe to use. The whole purpose of frameworks like this one is to make the generation of cryptographically random values easier. Aes.Create() is also used in the sample code



          Additionally, the documentation describes Aes.Create():




          Creates a cryptographic object that is used to perform the symmetric
          algorithm.




          This library is maintained by Microsoft, I think it is safe to say their values are "safe" to use.






          share|improve this answer


























          • What I am asking is that Create generates a key that is random enough to be used. I am planning to use a different key/IV for every message.

            – Old Geezer
            Nov 16 '18 at 16:27






          • 1





            Yes those values are safe to use. They are cryptographically generated. If they weren't the entire library would be useless.

            – DoesData
            Nov 16 '18 at 16:42






          • 1





            Yes, Microsoft .Net cryptography is generally secure by default, and can be trusted: you should use it rather than trying to generate values your own way. .Net cryptography is a big step forward from older languages like Java. I'm planning a blog on the evolution of cryptographic APIs that covers exactly this topic.

            – TheGreatContini
            Nov 16 '18 at 19:52











          • @TheGreatContini That's very opinionated. I think both languages have their advantages and disadvantages. I don't see any reasons for this kind of remark given the topic.

            – Maarten Bodewes
            Nov 17 '18 at 23:23











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          1 Answer
          1






          active

          oldest

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          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          2














          Those values are safe to use. The whole purpose of frameworks like this one is to make the generation of cryptographically random values easier. Aes.Create() is also used in the sample code



          Additionally, the documentation describes Aes.Create():




          Creates a cryptographic object that is used to perform the symmetric
          algorithm.




          This library is maintained by Microsoft, I think it is safe to say their values are "safe" to use.






          share|improve this answer


























          • What I am asking is that Create generates a key that is random enough to be used. I am planning to use a different key/IV for every message.

            – Old Geezer
            Nov 16 '18 at 16:27






          • 1





            Yes those values are safe to use. They are cryptographically generated. If they weren't the entire library would be useless.

            – DoesData
            Nov 16 '18 at 16:42






          • 1





            Yes, Microsoft .Net cryptography is generally secure by default, and can be trusted: you should use it rather than trying to generate values your own way. .Net cryptography is a big step forward from older languages like Java. I'm planning a blog on the evolution of cryptographic APIs that covers exactly this topic.

            – TheGreatContini
            Nov 16 '18 at 19:52











          • @TheGreatContini That's very opinionated. I think both languages have their advantages and disadvantages. I don't see any reasons for this kind of remark given the topic.

            – Maarten Bodewes
            Nov 17 '18 at 23:23
















          2














          Those values are safe to use. The whole purpose of frameworks like this one is to make the generation of cryptographically random values easier. Aes.Create() is also used in the sample code



          Additionally, the documentation describes Aes.Create():




          Creates a cryptographic object that is used to perform the symmetric
          algorithm.




          This library is maintained by Microsoft, I think it is safe to say their values are "safe" to use.






          share|improve this answer


























          • What I am asking is that Create generates a key that is random enough to be used. I am planning to use a different key/IV for every message.

            – Old Geezer
            Nov 16 '18 at 16:27






          • 1





            Yes those values are safe to use. They are cryptographically generated. If they weren't the entire library would be useless.

            – DoesData
            Nov 16 '18 at 16:42






          • 1





            Yes, Microsoft .Net cryptography is generally secure by default, and can be trusted: you should use it rather than trying to generate values your own way. .Net cryptography is a big step forward from older languages like Java. I'm planning a blog on the evolution of cryptographic APIs that covers exactly this topic.

            – TheGreatContini
            Nov 16 '18 at 19:52











          • @TheGreatContini That's very opinionated. I think both languages have their advantages and disadvantages. I don't see any reasons for this kind of remark given the topic.

            – Maarten Bodewes
            Nov 17 '18 at 23:23














          2












          2








          2







          Those values are safe to use. The whole purpose of frameworks like this one is to make the generation of cryptographically random values easier. Aes.Create() is also used in the sample code



          Additionally, the documentation describes Aes.Create():




          Creates a cryptographic object that is used to perform the symmetric
          algorithm.




          This library is maintained by Microsoft, I think it is safe to say their values are "safe" to use.






          share|improve this answer















          Those values are safe to use. The whole purpose of frameworks like this one is to make the generation of cryptographically random values easier. Aes.Create() is also used in the sample code



          Additionally, the documentation describes Aes.Create():




          Creates a cryptographic object that is used to perform the symmetric
          algorithm.




          This library is maintained by Microsoft, I think it is safe to say their values are "safe" to use.







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Nov 16 '18 at 16:41

























          answered Nov 16 '18 at 15:25









          DoesDataDoesData

          1,90511226




          1,90511226













          • What I am asking is that Create generates a key that is random enough to be used. I am planning to use a different key/IV for every message.

            – Old Geezer
            Nov 16 '18 at 16:27






          • 1





            Yes those values are safe to use. They are cryptographically generated. If they weren't the entire library would be useless.

            – DoesData
            Nov 16 '18 at 16:42






          • 1





            Yes, Microsoft .Net cryptography is generally secure by default, and can be trusted: you should use it rather than trying to generate values your own way. .Net cryptography is a big step forward from older languages like Java. I'm planning a blog on the evolution of cryptographic APIs that covers exactly this topic.

            – TheGreatContini
            Nov 16 '18 at 19:52











          • @TheGreatContini That's very opinionated. I think both languages have their advantages and disadvantages. I don't see any reasons for this kind of remark given the topic.

            – Maarten Bodewes
            Nov 17 '18 at 23:23



















          • What I am asking is that Create generates a key that is random enough to be used. I am planning to use a different key/IV for every message.

            – Old Geezer
            Nov 16 '18 at 16:27






          • 1





            Yes those values are safe to use. They are cryptographically generated. If they weren't the entire library would be useless.

            – DoesData
            Nov 16 '18 at 16:42






          • 1





            Yes, Microsoft .Net cryptography is generally secure by default, and can be trusted: you should use it rather than trying to generate values your own way. .Net cryptography is a big step forward from older languages like Java. I'm planning a blog on the evolution of cryptographic APIs that covers exactly this topic.

            – TheGreatContini
            Nov 16 '18 at 19:52











          • @TheGreatContini That's very opinionated. I think both languages have their advantages and disadvantages. I don't see any reasons for this kind of remark given the topic.

            – Maarten Bodewes
            Nov 17 '18 at 23:23

















          What I am asking is that Create generates a key that is random enough to be used. I am planning to use a different key/IV for every message.

          – Old Geezer
          Nov 16 '18 at 16:27





          What I am asking is that Create generates a key that is random enough to be used. I am planning to use a different key/IV for every message.

          – Old Geezer
          Nov 16 '18 at 16:27




          1




          1





          Yes those values are safe to use. They are cryptographically generated. If they weren't the entire library would be useless.

          – DoesData
          Nov 16 '18 at 16:42





          Yes those values are safe to use. They are cryptographically generated. If they weren't the entire library would be useless.

          – DoesData
          Nov 16 '18 at 16:42




          1




          1





          Yes, Microsoft .Net cryptography is generally secure by default, and can be trusted: you should use it rather than trying to generate values your own way. .Net cryptography is a big step forward from older languages like Java. I'm planning a blog on the evolution of cryptographic APIs that covers exactly this topic.

          – TheGreatContini
          Nov 16 '18 at 19:52





          Yes, Microsoft .Net cryptography is generally secure by default, and can be trusted: you should use it rather than trying to generate values your own way. .Net cryptography is a big step forward from older languages like Java. I'm planning a blog on the evolution of cryptographic APIs that covers exactly this topic.

          – TheGreatContini
          Nov 16 '18 at 19:52













          @TheGreatContini That's very opinionated. I think both languages have their advantages and disadvantages. I don't see any reasons for this kind of remark given the topic.

          – Maarten Bodewes
          Nov 17 '18 at 23:23





          @TheGreatContini That's very opinionated. I think both languages have their advantages and disadvantages. I don't see any reasons for this kind of remark given the topic.

          – Maarten Bodewes
          Nov 17 '18 at 23:23


















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