How many bytes of data does AES 256 encrypt at one time?Parallel file encryption and authentication for large...
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How many bytes of data does AES 256 encrypt at one time?
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Since the block size of AES 256 is 256, how would we calculate the bytes of data AES 256 encrypts at one time?
aes aes256
asked 5 hours ago
joshkmartinezjoshkmartinez
113
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add a comment |
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Since the block size of AES 256 is 256, how would we calculate the bytes of data AES 256 encrypts at one time?
aes aes256
asked 5 hours ago
joshkmartinezjoshkmartinez
113
New contributor
joshkmartinez is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
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There are ways of doing AES in parallel, so you could be doing a bunch of bytes at one time, crypto.stackexchange.com/questions/34740/…
$endgroup$
– daniel
2 hours ago
add a comment |
$begingroup$
Since the block size of AES 256 is 256, how would we calculate the bytes of data AES 256 encrypts at one time?
aes aes256
asked 5 hours ago
joshkmartinezjoshkmartinez
113
New contributor
joshkmartinez is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
Since the block size of AES 256 is 256, how would we calculate the bytes of data AES 256 encrypts at one time?
aes aes256
aes aes256
asked 5 hours ago
joshkmartinezjoshkmartinez
113
New contributor
joshkmartinez is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 5 hours ago
joshkmartinezjoshkmartinez
113
New contributor
joshkmartinez is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 5 hours ago
joshkmartinezjoshkmartinez
113
New contributor
joshkmartinez is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 5 hours ago
joshkmartinezjoshkmartinez
113
asked 5 hours ago
joshkmartinezjoshkmartinez
113
113
New contributor
joshkmartinez is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
joshkmartinez is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
joshkmartinez is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
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There are ways of doing AES in parallel, so you could be doing a bunch of bytes at one time, crypto.stackexchange.com/questions/34740/…
$endgroup$
– daniel
2 hours ago
add a comment |
$begingroup$
There are ways of doing AES in parallel, so you could be doing a bunch of bytes at one time, crypto.stackexchange.com/questions/34740/…
$endgroup$
– daniel
2 hours ago
$begingroup$
There are ways of doing AES in parallel, so you could be doing a bunch of bytes at one time, crypto.stackexchange.com/questions/34740/…
$endgroup$
– daniel
2 hours ago
$begingroup$
There are ways of doing AES in parallel, so you could be doing a bunch of bytes at one time, crypto.stackexchange.com/questions/34740/…
$endgroup$
– daniel
2 hours ago
add a comment |
1 Answer
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AES has always 128-bit block size with 128,192 and 256-bit keyspaces. Therefore, you can encrypt 16-byte at a time if you are using ECB and CBC modes. By using CTR mode you can encrypt 1-bit to 128-bit.
Some people confuse AES with Rijndael where AES is a variant of the Rijndael. Some old libraries use the Rijndael (see RijndaelManaged). Rijndael can have 128, 160, 192, 224, and 256-bit block size. Note that these are not standardized, see FIPS 197.
answered 5 hours ago
kelalakakelalaka
8,34822351
$endgroup$
1
$begingroup$
So both AES 128 and AES 256 encrypt 16 bytes at a time?
$endgroup$
– joshkmartinez
4 hours ago
$begingroup$
@joshkmartinez Yes. 128 & 256 refer to the key size, not the block size. The block always remains at 128 bits/16 bytes. One way to look at it, is that the AES block (rectangular) gets deeper, rather than wider.
$endgroup$
– Paul Uszak
1 hour ago
add a comment |
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1 Answer
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oldest
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1 Answer
1
active
oldest
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$begingroup$
AES has always 128-bit block size with 128,192 and 256-bit keyspaces. Therefore, you can encrypt 16-byte at a time if you are using ECB and CBC modes. By using CTR mode you can encrypt 1-bit to 128-bit.
Some people confuse AES with Rijndael where AES is a variant of the Rijndael. Some old libraries use the Rijndael (see RijndaelManaged). Rijndael can have 128, 160, 192, 224, and 256-bit block size. Note that these are not standardized, see FIPS 197.
answered 5 hours ago
kelalakakelalaka
8,34822351
$endgroup$
1
$begingroup$
So both AES 128 and AES 256 encrypt 16 bytes at a time?
$endgroup$
– joshkmartinez
4 hours ago
$begingroup$
@joshkmartinez Yes. 128 & 256 refer to the key size, not the block size. The block always remains at 128 bits/16 bytes. One way to look at it, is that the AES block (rectangular) gets deeper, rather than wider.
$endgroup$
– Paul Uszak
1 hour ago
add a comment |
$begingroup$
AES has always 128-bit block size with 128,192 and 256-bit keyspaces. Therefore, you can encrypt 16-byte at a time if you are using ECB and CBC modes. By using CTR mode you can encrypt 1-bit to 128-bit.
Some people confuse AES with Rijndael where AES is a variant of the Rijndael. Some old libraries use the Rijndael (see RijndaelManaged). Rijndael can have 128, 160, 192, 224, and 256-bit block size. Note that these are not standardized, see FIPS 197.
answered 5 hours ago
kelalakakelalaka
8,34822351
$endgroup$
1
$begingroup$
So both AES 128 and AES 256 encrypt 16 bytes at a time?
$endgroup$
– joshkmartinez
4 hours ago
$begingroup$
@joshkmartinez Yes. 128 & 256 refer to the key size, not the block size. The block always remains at 128 bits/16 bytes. One way to look at it, is that the AES block (rectangular) gets deeper, rather than wider.
$endgroup$
– Paul Uszak
1 hour ago
add a comment |
$begingroup$
AES has always 128-bit block size with 128,192 and 256-bit keyspaces. Therefore, you can encrypt 16-byte at a time if you are using ECB and CBC modes. By using CTR mode you can encrypt 1-bit to 128-bit.
Some people confuse AES with Rijndael where AES is a variant of the Rijndael. Some old libraries use the Rijndael (see RijndaelManaged). Rijndael can have 128, 160, 192, 224, and 256-bit block size. Note that these are not standardized, see FIPS 197.
answered 5 hours ago
kelalakakelalaka
8,34822351
$endgroup$
AES has always 128-bit block size with 128,192 and 256-bit keyspaces. Therefore, you can encrypt 16-byte at a time if you are using ECB and CBC modes. By using CTR mode you can encrypt 1-bit to 128-bit.
Some people confuse AES with Rijndael where AES is a variant of the Rijndael. Some old libraries use the Rijndael (see RijndaelManaged). Rijndael can have 128, 160, 192, 224, and 256-bit block size. Note that these are not standardized, see FIPS 197.
answered 5 hours ago
kelalakakelalaka
8,34822351
edited 2 hours ago
answered 5 hours ago
kelalakakelalaka
8,34822351
answered 5 hours ago
kelalakakelalaka
8,34822351
answered 5 hours ago
kelalakakelalaka
8,34822351
8,34822351
1
$begingroup$
So both AES 128 and AES 256 encrypt 16 bytes at a time?
$endgroup$
– joshkmartinez
4 hours ago
$begingroup$
@joshkmartinez Yes. 128 & 256 refer to the key size, not the block size. The block always remains at 128 bits/16 bytes. One way to look at it, is that the AES block (rectangular) gets deeper, rather than wider.
$endgroup$
– Paul Uszak
1 hour ago
add a comment |
1
$begingroup$
So both AES 128 and AES 256 encrypt 16 bytes at a time?
$endgroup$
– joshkmartinez
4 hours ago
$begingroup$
@joshkmartinez Yes. 128 & 256 refer to the key size, not the block size. The block always remains at 128 bits/16 bytes. One way to look at it, is that the AES block (rectangular) gets deeper, rather than wider.
$endgroup$
– Paul Uszak
1 hour ago
1
1
$begingroup$
So both AES 128 and AES 256 encrypt 16 bytes at a time?
$endgroup$
– joshkmartinez
4 hours ago
$begingroup$
So both AES 128 and AES 256 encrypt 16 bytes at a time?
$endgroup$
– joshkmartinez
4 hours ago
$begingroup$
@joshkmartinez Yes. 128 & 256 refer to the key size, not the block size. The block always remains at 128 bits/16 bytes. One way to look at it, is that the AES block (rectangular) gets deeper, rather than wider.
$endgroup$
– Paul Uszak
1 hour ago
$begingroup$
@joshkmartinez Yes. 128 & 256 refer to the key size, not the block size. The block always remains at 128 bits/16 bytes. One way to look at it, is that the AES block (rectangular) gets deeper, rather than wider.
$endgroup$
– Paul Uszak
1 hour ago
add a comment |
joshkmartinez is a new contributor. Be nice, and check out our Code of Conduct.
joshkmartinez is a new contributor. Be nice, and check out our Code of Conduct.
joshkmartinez is a new contributor. Be nice, and check out our Code of Conduct.
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There are ways of doing AES in parallel, so you could be doing a bunch of bytes at one time, crypto.stackexchange.com/questions/34740/…
$endgroup$
– daniel
2 hours ago