3-D walls and floor (n)~ The areas surrounding many 3-D chart types that give dimension and boundaries to the chart. Two walls and one floor are displayed within the plot area. 3DES (n)~ An encryption algorithm based on the Data Encryption Standard (DES).

3-D Walls and Floor (n)

In the context of 3-D charts in data visualization tools like Microsoft Excel or other charting software, 3-D walls and floor refer to the areas that define the boundaries and dimensions of a 3-D chart. These features are used to give depth and perspective to the chart, making it appear three-dimensional.

A typical 3-D chart, such as a 3-D bar or 3-D column chart, is presented within a plot area, and the walls and floor create a sense of space. The chart is framed by two walls (front and side walls) and one floor (the bottom of the chart), which help viewers to understand the 3-D nature of the data representation.

• Two walls: These are the vertical planes that create the sides of the 3-D chart. One typically represents the X-axis and the other the Y-axis.
• One floor: This is the horizontal plane at the base of the chart, representing the Z-axis, which gives the chart its depth.

These walls and the floor are used to provide orientation and perspective. Without them, the chart could appear flat or two-dimensional, making it harder to interpret the relative positioning of data points in the 3D space. They act as a guide to help users understand the spatial relationship between different data elements in the chart.

In summary, the walls and floor in a 3-D chart enhance the visual appeal of the data by adding dimension, helping to make the data easier to analyze and interpret.

3DES (n)

3DES (Triple Data Encryption Standard) is an encryption algorithm that enhances the security of the original Data Encryption Standard (DES) algorithm. DES was widely used in the 1970s and 1980s for encrypting data, but over time, its 56-bit key became vulnerable to brute-force attacks. 3DES was developed as a way to improve upon DES by applying the DES algorithm three times with different keys, effectively increasing the encryption strength.

3DES operates in three stages:

1. Encryption: First, the plaintext data is encrypted using a DES encryption key (K1).
2. Decryption: The ciphertext is then decrypted using a second DES key (K2), which ensures that the encryption process is not easily reversible.
3. Encryption: Finally, the resulting ciphertext is encrypted once again using a third key (K3).

The use of three separate keys provides a much stronger level of encryption compared to standard DES, with a key size of up to 168 bits (3 × 56-bit keys). However, 3DES is considered slow and less secure by modern standards, and it has largely been replaced by more advanced encryption methods like AES (Advanced Encryption Standard). Despite its age, 3DES is still used in legacy systems for certain security applications.

Key Features of 3DES:

• Triple encryption: The data is encrypted three times with different keys, providing enhanced security.
• Key size: 3DES uses a 168-bit key length, which is significantly stronger than the 56-bit key of DES.
• Backward compatibility: 3DES is compatible with older systems that only support DES, making it useful for certain legacy applications.

While 3DES was an important improvement over DES, its use in modern cryptography is limited due to its slower performance and vulnerability to certain attacks. Most modern encryption systems now use AES, which offers superior security and efficiency.

The above information is provided as general reference material and should not be taken as specific advice. For accurate analysis and professional guidance tailored to your specific situation, please consult an expert in the relevant field.